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Takeshi Oka - Publications

Affiliations: 
University of Chicago, Chicago, IL 
Area:
infrared, nearinfrared and visible laser radiation sources to conduct high-resolution high-sensitivity spectroscopy of molecular ions in laboratory plasmas
Website:
http://chemistry.uchicago.edu/faculty/faculty/person/member/takeshi-oka.html

219 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2020 Acciari VA, Ansoldi S, Antonelli LA, Engels AA, Baack D, Babic A, Banerjee B, Almeida UBd, Barrio JA, Gonzalez JB, Bednarek W, Bellizzi L, Bernardini E, Berti A, Besenrieder J, ... ... Oka T, et al. Unraveling the Complex Behavior of Mrk 421 with Simultaneous X-Ray and VHE Observations during an Extreme Flaring Activity in 2013 April Astrophysical Journal Supplement Series. 248: 29-65. DOI: 10.3847/1538-4365/Ab89B5  0.32
2020 Acciari VA, Ansoldi S, Antonelli LA, Engels AA, Baack D, Babić A, Banerjee B, Almeida UBd, Barrio JA, González JB, Bednarek W, Bellizzi L, Bernardini E, Berti A, Besenrieder J, ... ... Oka T, et al. An intermittent extreme BL Lac: MWL study of 1ES 2344+514 in an enhanced state Monthly Notices of the Royal Astronomical Society. 496: 3912-3928. DOI: 10.1093/Mnras/Staa1702  0.351
2019 Oka T. H, the ideal probe for in situ measurement of the Galactic cosmic rays. Philosophical Transactions. Series a, Mathematical, Physical, and Engineering Sciences. 377: 20180402. PMID 31378184 DOI: 10.1098/Rsta.2018.0402  0.373
2019 Geballe TR, Oka T, Goto M. The motion and distribution of the gas in the central 300 pc of the galaxy as revealed by spectra of H. Philosophical Transactions. Series a, Mathematical, Physical, and Engineering Sciences. 377: 20180400. PMID 31378174 DOI: 10.1098/Rsta.2018.0400  0.379
2019 Liu DJ, Oka T. Experimental determination of the ground-state inversion splitting in H3O+ Physical Review Letters. 54: 1787-1789. PMID 10031140 DOI: 10.1103/Physrevlett.54.1787  0.617
2019 Adams K, Oka T. Relating the Carriers of λ5797.1 Diffuse Interstellar Band and λ5800 Red Rectangle Band The Astrophysical Journal. 886: 138. DOI: 10.3847/1538-4357/Ab4C49  0.351
2019 Oka T, Geballe TR, Goto M, Usuda T, Benjamin, McCall J, Indriolo N. The Central 300 pc of the Galaxy probed by infrared spectra of H$_3^+$ and CO: part I. Predominance of warm and diffuse gas and high H$_2$ ionization rate The Astrophysical Journal. 883: 54. DOI: 10.3847/1538-4357/Ab3647  0.436
2019 Geballe TR, Lambrides E, Schlegelmilch B, Yeh SCC, Goto M, Westrick C, Oka T, Najarro F. Background Infrared Sources for Studying the Galactic Center’s Interstellar Gas The Astrophysical Journal. 872: 103. DOI: 10.3847/1538-4357/Aafedc  0.407
2015 Oka T. Vibrational dynamics. Taming CH₅⁺, the "enfant terrible" of chemical structures. Science (New York, N.Y.). 347: 1313-4. PMID 25792316 DOI: 10.1126/Science.Aaa6935  0.333
2015 Geballe TR, Mason RE, Oka T. OUTFLOWING DIFFUSE GAS in the ACTIVE GALACTIC NUCLEUS of NGC 1068 Astrophysical Journal. 812. DOI: 10.1088/0004-637X/812/1/56  0.393
2015 Huang J, Oka T. Constraining the size of the carrier of the λ5797.1 diffuse interstellar band Molecular Physics. DOI: 10.1080/00268976.2015.1012567  0.413
2014 Oka T, Welty DE, Johnson S, York DG, Dahlstrom J, Hobbs L. Erratum: "Anomalous Diffuse Interstellar Bands in the Spectrum of Herschel 36. II. Analysis of Radiatively Excited CH + , CH, and Diffuse Interstellar Bands" (2013, ApJ, 773, 42) The Astrophysical Journal. 793: 68. DOI: 10.1088/0004-637X/793/1/68  0.362
2014 Goto M, Geballe TR, Indriolo N, Yusef-Zadeh F, Usuda T, Henning T, Oka T. Infrared H3 + and Co studies of the galactic core: GCIRS 3 and gcirs 1W Astrophysical Journal. 786. DOI: 10.1088/0004-637X/786/2/96  0.714
2014 Neese CF, Kreynin PS, Oka T. Correction to “Hot Band Spectroscopy of the Formyl Cation, H12C16O+” The Journal of Physical Chemistry A. 118: 5358-5358. DOI: 10.1021/Jp505658C  0.743
2013 Wang H, Neese CF, Morong CP, Kleshcheva M, Oka T. High-resolution near-infrared spectroscopy of CH2(+) and its deuterated isotopologues. The Journal of Physical Chemistry. A. 117: 9908-18. PMID 23957384 DOI: 10.1021/Jp3128803  0.76
2013 Tanaka K, Harada K, Oka T. Ortho-para mixing hyperfine interaction in the H2O+ ion and nuclear spin equilibration. The Journal of Physical Chemistry. A. 117: 9584-92. PMID 23530629 DOI: 10.1021/Jp312270U  0.332
2013 Neese CF, Kreynin PS, Oka T. Hot band spectroscopy of the formyl cation, H12C16O+. The Journal of Physical Chemistry. A. 117: 9899-907. PMID 23488795 DOI: 10.1021/Jp312879F  0.755
2013 Oka T, Welty DE, Johnson S, York DG, Dahlstrom J, Hobbs LM. Anomalous diffuse interstellar bands in the spectrum of Herschel 36. II. analysis of radiatively excited CH+, CH, and diffuse interstellar bands Astrophysical Journal. 773. DOI: 10.1088/0004-637X/773/1/42  0.415
2013 Dahlstrom J, York DG, Welty DE, Oka T, Hobbs LM, Johnson S, Friedman SD, Jiang Z, Rachford BL, Sherman R, Snow TP, Sonnentrucker P. Anomalous diffuse interstellar bands in the spectrum of Herschel 36. I. observations of rotationally excited CH and CH+ absorption and strong, extended redward wings on several DIBs Astrophysical Journal. 773. DOI: 10.1088/0004-637X/773/1/41  0.427
2011 Oka T. Spectroscopy and astronomy: H3+ from the laboratory to the Galactic center. Faraday Discussions. 150: 9-22; discussion 113. PMID 22457941 DOI: 10.1039/C1Fd00092F  0.4
2011 Oka T, McCall BJ. Astronomy. Disclosing identities in diffuse interstellar bands. Science (New York, N.Y.). 331: 293-4. PMID 21252337 DOI: 10.1126/Science.1200144  0.668
2011 Goto M, Usuda T, Geballe TR, Indriolo N, Mccall BJ, Henning T, Oka T. Absorption-Line Survey of H$_3^\textbf{+}$ toward the Galactic Center Sources. III. Extent of Warm and Diffuse Clouds Publications of the Astronomical Society of Japan. 63: L13-L17. DOI: 10.1093/Pasj/63.2.L13  0.794
2011 Goto M, Usuda T, Geballe TR, Indriolo N, McCall BJ, Henning T, Oka T. Absorption-line survey of H+ 3 toward the Galactic center sources. III. Extent of warm and diffuse clouds Publications of the Astronomical Society of Japan. 63: L13-L17.  0.777
2010 Geballe TR, Oka T. Two new and remarkable sightlines through the galactic center's molecular gas Astrophysical Journal Letters. 709: L70-L73. DOI: 10.1088/2041-8205/709/1/L70  0.38
2010 Indriolo N, Blake GA, Goto M, Usuda T, Oka T, Geballe TR, Fields BD, McCall BJ. Investigating the cosmic-ray ionization rate near the supernova remnant IC 443 through H+ 3 observations Astrophysical Journal. 724: 1357-1365. DOI: 10.1088/0004-637X/724/2/1357  0.791
2010 Indriolo N, Oka T, Geballe TR, McCall BJ. Constraining the environment of CH+ formation with CH + 3 observations Astrophysical Journal. 711: 1338-1342. DOI: 10.1088/0004-637X/711/2/1338  0.755
2009 Hobbs LM, York DG, Thorburn JA, Snow TP, Bishof M, Friedman SD, McCall BJ, Oka T, Rachford B, Sonnentrucker P, Welty DE. Studies of the diffuse interstellar bands. III. HD 183143 Astrophysical Journal. 705: 32-45. DOI: 10.1088/0004-637X/705/1/32  0.666
2009 Morong CP, Gottfried JL, Oka T. H3 + as the benchmark for rigorous ab initio theory Journal of Molecular Spectroscopy. 255: 13-23. DOI: 10.1016/J.Jms.2009.02.010  0.777
2008 Goto M, Usuda T, Nagata T, Geballe TR, McCall BJ, Indriolo N, Suto H, Henning T, Morong CP, Oka T. Absorption line survey of H3 + toward the galactic center sources. II. Eight infrared sources within 30 pc of the galactic center Astrophysical Journal. 688: 306-319. DOI: 10.1086/591657  0.783
2008 Hobbs LM, York DG, Snow TP, Oka T, Thorburn JA, Bishof M, Friedman SD, McCall BJ, Rachford B, Sonnentrucker P, Welty DE. A catalog of diffuse interstellar bands in the spectrum of HD 204827 Astrophysical Journal. 680: 1-39. DOI: 10.1086/587930  0.667
2007 Indriolo N, Geballe TR, Oka T, McCall BJ. H3 + in diffuse interstellar clouds: A tracer for the cosmic-ray ionization rate Astrophysical Journal. 671: 1736-1747. DOI: 10.1086/523036  0.763
2006 Oka T. Physics, chemistry and astronomy of H3+. Introductory remarks. Philosophical Transactions. Series a, Mathematical, Physical, and Engineering Sciences. 364: 2847-53. PMID 17015387 DOI: 10.1098/Rsta.2006.1870  0.304
2006 Oka T. Interstellar H(3)(+). Proceedings of the National Academy of Sciences of the United States of America. 103: 12235-42. PMID 16894171 DOI: 10.1073/Pnas.0601242103  0.384
2006 Geballe TR, Goto M, Usuda T, Oka T, McCall BJ. The interstellar medium of IRAS 08572+3915 NW: H3 + and warm high-velocity CO1,2 Astrophysical Journal. 644: 907-913. DOI: 10.1086/503763  0.549
2005 Oka T, Geballe TR, Goto M, Usuda T, McCall BJ. Hot and diffuse clouds near the galactic center probed by metastable H 3 + 1,2,3 Astrophysical Journal. 632: 882-893. DOI: 10.1086/432679  0.583
2005 Goto M, Geballe TR, McCall BJ, Usuda T, Suto H, Terada H, Kobayashi N, Oka T. Search for H3 + in HD 141569A Astrophysical Journal. 629: 865-872. DOI: 10.1086/430754  0.524
2005 Momose T, Oka T. High-resolution stimulated raman gain spectroscopy of parahydrogen crystals Journal of Low Temperature Physics. 139: 515-522. DOI: 10.1007/S10909-005-5437-3  0.398
2004 Gottfried JL, Oka T. Near-infrared electronic spectrum of CH2+. The Journal of Chemical Physics. 121: 11527-9. PMID 15634116 DOI: 10.1063/1.1835265  0.693
2004 Tarsitano CG, Neese CF, Oka T. High-resolution spectroscopy of the 2(2)Piu<--X4Sigmag- forbidden transitions of C2+. The Journal of Chemical Physics. 121: 6290-7. PMID 15446923 DOI: 10.1063/1.1787493  0.787
2004 Hobbs LM, Thorburn JA, Oka T, Barentine J, Snow TP, York DG. Atomic and molecular emission lines from the red rectangle Astrophysical Journal. 615: 947-957. DOI: 10.1086/424733  0.355
2004 Oka T, Epp E. The nonthermal rotational distribution of H3 + Astrophysical Journal. 613: 349-354. DOI: 10.1086/423030  0.424
2003 Thorburn JA, Hobbs LM, McCall BJ, Oka T, Welty DE, Friedman SD, Snow TP, Sonnentrucker P, York DG. Some diffuse interstellar bands related to interstellar C2 molecules Astrophysical Journal. 584: 339-356. DOI: 10.1086/345665  0.627
2003 Oka T, Thorburn JA, McCall BJ, Friedman SD, Hobbs LM, Sonnentrucker P, Welty DE, York DG. Observations of C3 in translucent sight lines Astrophysical Journal. 582: 823-829. DOI: 10.1086/344726  0.603
2003 Gottfried JL, McCall BJ, Oka T. Near-infrared spectroscopy of H3 + above the barrier to linearity Journal of Chemical Physics. 118: 10890-10899. DOI: 10.1063/1.1575737  0.78
2003 McCall BJ, Huneycutt AJ, Saykally RJ, Lindsay CM, Oka T, Fushitani M, Miyamoto Y, Momose T. Stimulated stokes downconversion in liquid and solid parahydrogen Applied Physics Letters. 82: 1350-1352. DOI: 10.1063/1.1556560  0.781
2003 Tarsitano CG, Oka T. Rotational analysis of the (3,3) and (4,4) bands of the A2Πu ← X2Σg + system of N2 + in the near-infrared using velocity modulation spectroscopy Journal of Molecular Spectroscopy. 219: 263-270. DOI: 10.1016/S0022-2852(03)00012-2  0.784
2003 Lindsay CM, Oka T, Momose T. A remeasurement of the spectrum of pairs in a parahydrogen crystal Journal of Molecular Spectroscopy. 218: 131-133. DOI: 10.1016/S0022-2852(02)00065-6  0.617
2003 Lindsay CM, Oka T, Momose T. A remeasurement of the 2.4 μm spectrum of J = 1 H2 pairs in a parahydrogen crystal Journal of Molecular Spectroscopy. 218: 131-133.  0.639
2002 Oka T. Enigmatic emission. Nature. 418: 31-3. PMID 12097895 DOI: 10.1038/418031A  0.325
2002 Goto M, McCall BJ, Geballe TR, Usuda T, Kobayashi N, Terada H, Oka T. Absorption line survey of H3 + toward the Galactic center sources I. GCS 3-2 and GC IRS3 Publications of the Astronomical Society of Japan. 54: 951-961. DOI: 10.1093/Pasj/54.6.951  0.68
2002 McCall BJ, Oka T, Thorburn J, Hobbs LM, York DG. A critical examination of the l-C3H2 - spectrum and the diffuse interstellar bands Astrophysical Journal. 567: L145-L148. DOI: 10.1086/340111  0.624
2002 McCall BJ, Hinkle KH, Geballe TR, Moriarty-Schieven GH, Evans NJ, Kawaguchi K, Takano S, Smith VV, Oka T. Observations of H3 + in the diffuse interstellar medium Astrophysical Journal. 567: 391-406. DOI: 10.1086/338380  0.609
2001 Momose T, Lindsay CM, Zhang Y, Oka T. Sharp spectral lines observed in gamma-ray ionized parahydrogen crystals. Physical Review Letters. 86: 4795-8. PMID 11384350 DOI: 10.1103/Physrevlett.86.4795  0.711
2001 McCall BJ, Thorburn J, Hobbs LM, Oka T, York DG. Rejection of the C- 7 diffuse interstellar band hypothesis Astrophysical Journal. 559: L49-L53. DOI: 10.1086/323669  0.612
2001 Lindsay CM, Rade RM, Oka T. Survey of H3 + transitions between 3000 and 4200 cm-1 Journal of Molecular Spectroscopy. 210: 51-59. DOI: 10.1006/Jmsp.2001.8443  0.707
2000 McCall BJ, Oka T. H3/+ - An ion with many talents Science. 287: 1941-1942. DOI: 10.1126/Science.287.5460.1941  0.572
2000 Mccall BJ, York DG, Oka T. Observations of diffuse interstellar bands attributed to C- 7 Astrophysical Journal. 531: 329-335. DOI: 10.1086/308453  0.641
2000 Uy D, Gabrys CM, Oka T, Cotterell BJ, Stickland RJ, Jungen C, Wüest A. Fine structure of the H2 5g-4f inter-Rydberg transition revealed by difference frequency laser spectroscopy Journal of Chemical Physics. 113: 10143-10153. DOI: 10.1063/1.1322634  0.411
2000 McCall BJ, Oka T. Combination band spectroscopy of H3 Journal of Chemical Physics. 113: 3104-3110. DOI: 10.1063/1.1287142  0.463
2000 Cordonnier M, Uy D, Dickson RM, Kerr KE, Zhang Y, Oka T. Selection rules for nuclear spin modifications in ion-neutral reactions involving H3 + Journal of Chemical Physics. 113: 3181-3193. DOI: 10.1063/1.1285852  0.345
2000 Chan MC, Okumura M, Oka T. Infrared spectrum of p-hydrogen crystals ionized by 3 MeV electrons: Cluster ions of hydrogen in condensed phase Journal of Physical Chemistry A. 104: 3775-3779. DOI: 10.1021/Jp993890H  0.575
2000 Momose T, Zhang Y, Oka T. High-resolution spectroscopy of ions in γ-ray irradiated solid parahydrogen Physica B: Condensed Matter. 284: 387-388. DOI: 10.1016/S0921-4526(99)02781-7  0.443
2000 Lindsay CM, White ET, Oka T. Measurement of the H 3 + destruction rate due to ambipolar diffusion in an AC positive column discharge Chemical Physics Letters. 328: 129-134. DOI: 10.1016/S0009-2614(00)00914-3  0.657
2000 McCall BJ, Oka T. Combination band spectroscopy of H3 + Journal of Chemical Physics. 113: 3104-3110.  0.627
1999 White ET, Tang J, Oka T. CH5 +: The infrared spectrum observed Science. 284: 135-137. DOI: 10.1126/Science.284.5411.135  0.38
1999 McCall BJ, Geballe TR, Hinkle KH, Oka T. Observations of H+ 3 in dense molecular clouds Astrophysical Journal. 522: 338-348. DOI: 10.1086/307637  0.63
1999 McCall BJ, Geballe TR, Hinkle KH, Oka T. Observations of \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape $\mathrm{H}\,^{+}_{3}$ \end{document} in Dense Molecular Clouds The Astrophysical Journal. 522: 338-348. DOI: 10.1086/307637  0.613
1999 Geballe TR, Mccall BJ, Hinkle KH, Oka T. Detection of H3 + in the diffuse interstellar medium: The galactic center and cygnus OB2 number 12 Astrophysical Journal. 510: 251-257. DOI: 10.1086/306580  0.662
1999 Oka T, Stoicheff BP, Watson JKG. Obituary: Gerhard Herzberg Physics Today. 52: 78. DOI: 10.1063/1.882794  0.511
1998 McCall BJ, Hinkle KH, Geballe TR, Oka T. H3+ in dense and diffuse clouds. Faraday Discussions. 267-80. PMID 9809013 DOI: 10.1039/A800655E  0.658
1998 McCall BJ, Geballe TR, Hinkle KH, Oka T. Detection of H3+ in the diffuse interstellar medium toward Cygnus OB2 No. 12. Science (New York, N.Y.). 279: 1910-3. PMID 9506936 DOI: 10.1126/Science.279.5358.1910  0.639
1998 Zhang Y, Byers TJ, Chan MC, Momose T, Kerr KE, Weliky DP, Oka T. High-resolution infrared spectroscopy of the J = 1 H2 pair in parahydrogen crystals Physical Review B - Condensed Matter and Materials Physics. 58: 218-233. DOI: 10.1103/Physrevb.58.218  0.676
1998 Dickson RM, Oka T. Variation of intermolecular interaction and local lattice distortion of parahydrogen crystals upon vibrational excitation Physical Review B - Condensed Matter and Materials Physics. 57: 950-955. DOI: 10.1103/Physrevb.57.950  0.617
1998 Dickson RM, Momose T, Byers TJ, Oka T. High-resolution spectroscopy of the impurity-induced Q 3 Ñ0Ö transition of solid parahydrogen Physical Review B. 57: 941-949. DOI: 10.1103/Physrevb.57.941  0.649
1998 Dickson RM, Momose T, Byers TJ, Oka T. High-resolution spectroscopy of the impurity-induced Q3(0) transition of solid parahydrogen Physical Review B - Condensed Matter and Materials Physics. 57: 941-949.  0.561
1997 Uy D, White ET, Oka T. Observation of Delta|k - l | = 3 Transitions in the nu3 Band of H3 O+ Journal of Molecular Spectroscopy. 183: 240-244. PMID 9252294 DOI: 10.1006/Jmsp.1997.7270  0.378
1997 Uy D, Cordonnier M, Oka T. Observation of Ortho-Para {bold H}{sup {bold +}}{sub {bold 3}} Selection Rules in Plasma Chemistry Physical Review Letters. 78: 3844-3847. DOI: 10.1103/Physrevlett.78.3844  0.309
1997 Matsushima F, Oka T, Takagi K. Observation of the Rotational Spectra of 4 HeH + , 4 HeD + , 3 HeH + , and 3 HeD + Physical Review Letters. 78: 1664-1666. DOI: 10.1103/Physrevlett.78.1664  0.305
1997 Momose T, Miki M, Wakabayashi T, Shida T, Chan MC, Lee SS, Oka T. Infrared spectroscopic study of rovibrational states of methane trapped in parahydrogen crystal Journal of Chemical Physics. 107: 7707-7716. DOI: 10.1063/1.475085  0.448
1996 Geballe TR, Oka T. Detection of H3/+ interstellar space Nature. 384: 334-335. PMID 8934516 DOI: 10.1038/384334A0  0.388
1996 Weliky DP, Kerr KE, Byers TJ, Zhang Y, Momose T, Oka T. High-resolution infrared spectroscopy of isotopic impurity Q1(0) transitions in solid parahydrogen Journal of Chemical Physics. 105: 4461-4481. DOI: 10.1063/1.472298  0.679
1996 Dickson RM, Byers TJ, Oka T. Direct measurement of the crystal field splitting of isolated J=1 impurities in solid parahydrogen Journal of Low Temperature Physics. 102: 241-247. DOI: 10.1007/Bf00754660  0.623
1996 Kabbadj Y, Huet TR, Uy D, Oka T. Infrared spectroscopy of the amidogen ion, NH+ 2 Journal of Molecular Spectroscopy. 175: 277-288. DOI: 10.1006/Jmsp.1996.0033  0.445
1995 Gabrys CM, Uy D, Jagod MF, Oka T, Amano T. Infrared spectroscopy of carboions. 8. Hollow cathode spectroscopy of protonated acetylene, C2H3 + Journal of Physical Chemistry. 99: 15611-15623. DOI: 10.1021/J100042A042  0.393
1995 Dickson RM, Oka T. Observation of the S3(0) transition in solid parahydrogen and a theory of solid-state rovibrational line widths Journal of Physical Chemistry. 99: 2617-2624. DOI: 10.1021/J100009A020  0.608
1994 Jagod M, Gabrys CM, Rösslein M, Uy D, Oka T. Infrared spectrum of CH3+ involving high rovibrationai levels Canadian Journal of Physics. 72: 1192-1199. DOI: 10.1139/P94-153  0.408
1994 Kerr KE, Momose T, Weliky DP, Gabrys CM, Oka T. Condon modulation spectroscopy of solid hydrogen and measurement of the temperature dependence of the Q1(0) transition Physical Review Letters. 72: 3957-3960. DOI: 10.1103/Physrevlett.72.3957  0.612
1994 Uy D, Gabrys CM, Jagod MF, Oka T. Spectral lines and distribution of H3 + in high rotational levels The Journal of Chemical Physics. 100: 6267-6274. DOI: 10.1063/1.467089  0.437
1994 Ventrudo BF, Cassidy DT, Guo ZY, Joo S, Lee SS, Oka T. Near infrared 3ν2 overtone band of H+3 Journal of Chemical Physics. 100: 6263-6266. DOI: 10.1063/1.467088  0.488
1994 Momose T, Kerr KE, Weliky DP, Gabrys CM, Dickson RM, Oka T. Charge induced H2 spectrum in γ‐ray irradiated para‐H2 crystals Journal of Chemical Physics. 100: 7840-7843. DOI: 10.1063/1.466829  0.358
1994 Weliky DP, Byers TJ, Kerr KE, Momose T, Dickson RM, Oka T. High-resolution laser spectroscopy of the Qv(0) transitions in solid parahydrogen Applied Physics B Lasers and Optics. 59: 265-281. DOI: 10.1007/Bf01081395  0.761
1994 Huet TR, Kabbadj Y, Gabrys CM, Oka T. The ν2 + ν3 - ν2 Band of NH+ 3 Journal of Molecular Spectroscopy. 163: 206-213. DOI: 10.1006/Jmsp.1994.1017  0.437
1994 Kabbadj Y, Huet TR, Rehfuss BD, Gabrys CM, Oka T. Infrared spectroscopy of highly excited vibrational levels of protonated nitrogen, HN2 + Journal of Molecular Spectroscopy. 163: 180-205. DOI: 10.1006/Jmsp.1994.1016  0.443
1994 Ventrudo BF, Cassidy DT, Yu Guo Z, Joo S, Lee SS, Oka T. Near infrared 3ν2 overtone band of H3 + The Journal of Chemical Physics. 100: 6263-6266.  0.336
1994 Momose T, Kerr KE, Weliky DP, Gabrys CM, Dickson RM, Oka T. Charge induced H2 spectrum in γ-ray irradiated para-H 2 crystals The Journal of Chemical Physics. 100: 7840-7843.  0.718
1993 Geballe TR, Jagod M, Oka T. Detection of H3(+) infrared emission lines in Saturn The Astrophysical Journal. 408: L109. DOI: 10.1086/186843  0.43
1993 Oka T, Jagod MF. Infrared spectrum of H3 + as an astronomical probe Journal of the Chemical Society, Faraday Transactions. 89: 2147-2154. DOI: 10.1039/Ft9938902147  0.42
1992 Huet TR, Pursell CJ, Ho WC, Dinelli BM, Oka T. Infrared spectroscopy and equilibrium structure of H2O+(X̃ 2B1) The Journal of Chemical Physics. 97: 5977-5987. DOI: 10.1063/1.463735  0.454
1992 Jagod M, Rösslein M, Gabrys CM, Rehfuss BD, Scappini F, Crofton MW, Oka T. Infrared spectroscopy of carbo‐ions. VI. C–H stretching vibration of the acetylene ion C2H2+ and isotopic species Journal of Chemical Physics. 97: 7111-7123. DOI: 10.1063/1.463536  0.351
1992 Chan M, Lee SS, Okumura M, Oka T. Erratum: Laser spectroscopic studies of the pure rotational U0(0) and W0(0) transitions of solid parahydrogen [J. Chem. Phys. 95, 88 (1991)] The Journal of Chemical Physics. 96: 1662-1662. DOI: 10.1063/1.462157  0.546
1992 Momose T, Weliky DP, Oka T. The stimulated Raman gain spectrum of the Q1←0(0) transition of solid parahydrogen Journal of Molecular Spectroscopy. 153: 760-761. DOI: 10.1016/0022-2852(92)90511-L  0.636
1992 Xu L, Rösslein M, Gabrys CM, Oka T. Observation of infrared forbidden transitions of H3+ Journal of Molecular Spectroscopy. 153: 726-737. DOI: 10.1016/0022-2852(92)90507-K  0.459
1992 Jagod M, Rösslein M, Gabrys CM, Oka T. Infrared spectroscopy of carbo-ions: The ν1 and ν4 bands of CH2D+, and the ν1 band of CHD2+ Journal of Molecular Spectroscopy. 153: 666-679. DOI: 10.1016/0022-2852(92)90501-E  0.455
1992 Rehfuss BD, Jagod M, Xu L, Oka T. Infrared spectroscopy of highly excited vibrational levels of the hydroxyl ion, OH+ Journal of Molecular Spectroscopy. 151: 59-70. DOI: 10.1016/0022-2852(92)90007-B  0.426
1991 Chan MC, Okumura M, Gabrys CM, Xu LW, Rehfuss BD, Oka T. High-resolution infrared spectroscopy of solid hydrogen. Physical Review Letters. 66: 2060-2063. PMID 10043381 DOI: 10.1103/Physrevlett.66.2060  0.582
1991 Chan M, Okumura M, Gabrys CM, Xu L, Rehfuss BD, Oka T. Erratum: High-resolution infrared spectroscopy of solid hydrogen [Phys. Rev. Lett. 66, 2060 (1991)] Physical Review Letters. 67: 2113. DOI: 10.1103/Physrevlett.67.2113.3  0.526
1991 Kao L, Oka T, Miller S, Tennyson J. A Table Of Astronomically Important Ro-Vibrational Transitions For The H-3(+) Molecular Ion Astrophysical Journal Supplement Series. 77: 317-329. DOI: 10.1086/191606  0.39
1991 Roesslein M, Jagod M, Gabrys CM, Oka T. Laboratory infrared spectra of CH2D(+) and HCCD(+) and predicted microwave transitions The Astrophysical Journal. 382: L51. DOI: 10.1086/186211  0.4
1991 Chan M, Lee SS, Okumura M, Oka T. Laser spectroscopic studies of the pure rotational U0(0) and W0(0) transitions of solid parahydrogen Journal of Chemical Physics. 95: 88-97. DOI: 10.1063/1.461821  0.598
1991 Chan M, Xu L, Gabrys CM, Oka T. High resolution infrared spectroscopy of deuterium in p‐H2 matrix The Journal of Chemical Physics. 95: 9404-9407. DOI: 10.1063/1.461169  0.414
1991 Lee SS, Oka T. Diode laser spectroscopy of the ν2 fundamental and hot bands of NH+3 The Journal of Chemical Physics. 94: 1698-1704. DOI: 10.1063/1.459941  0.453
1991 Lee SS, Ventrudo BF, Cassidy DT, Oka T, Miller S, Tennyson J. Observation of the 3ν2 ← 0 overtone band of H3+ Journal of Molecular Spectroscopy. 145: 222-224. DOI: 10.1016/0022-2852(91)90365-H  0.434
1991 Ho W, Pursell C, Oka T. Infrared spectroscopy in an H2O2He discharge: H3O+ Journal of Molecular Spectroscopy. 149: 530-541. DOI: 10.1016/0022-2852(91)90308-W  0.463
1990 Ho WC, Pursell CJ, Weliky DP, Takagi K, Oka T. Infrared–microwave double resonance spectroscopy of molecular ions: HN+2 The Journal of Chemical Physics. 93: 87-93. DOI: 10.1063/1.459466  0.633
1990 Pursell CJ, Weliky DP, Oka T. Collision‐induced double resonance studies of HN+2and HCN The Journal of Chemical Physics. 93: 7041-7048. DOI: 10.1063/1.459426  0.642
1990 Chan M, Oka T. Observation of the U1←0(1) transition of solid deuterium Journal of Chemical Physics. 93: 979-982. DOI: 10.1063/1.459124  0.387
1990 Xu L, Gabrys C, Oka T. Observation of the 2ν2(l=2)←0 overtone band of H+3 The Journal of Chemical Physics. 93: 6210-6215. DOI: 10.1063/1.458990  0.443
1990 Bawendi MG, Rehfuss BD, Oka T. Laboratory observation of hot bands of H+3 The Journal of Chemical Physics. 93: 6200-6209. DOI: 10.1063/1.458989  0.465
1990 Jagod M, Oka T. Inertial defects of planar symmetric top molecules Journal of Molecular Spectroscopy. 139: 313-327. DOI: 10.1016/0022-2852(90)90068-2  0.341
1989 Okumura M, Chan MC, Oka T. High-resolution infrared spectroscopy of solid hydrogen: The tetrahexacontapole-induced Delta J=6 transitions. Physical Review Letters. 62: 32-35. PMID 10039541 DOI: 10.1103/Physrevlett.62.32  0.606
1989 Crofton MW, Jagod M, Rehfuss BD, Oka T. Infrared spectroscopy of carbo‐ions. V. Classical vs nonclassical structure of protonated acetylene C2H+3 Journal of Chemical Physics. 91: 5139-5153. DOI: 10.1063/1.457612  0.387
1989 Crofton MW, Altman RS, Haese NN, Oka T. Infrared spectra of 4HeH+, 4HeD+, 3HeH+, and 3HeD+ Journal of Chemical Physics. 91: 5882-5886. DOI: 10.1063/1.457456  0.414
1989 Pursell CJ, Weliky DP, Ho WC, Takagi K, Oka T. Observation of direct and collision-induced double resonance of a molecular ion Journal of Chemical Physics. 91: 7997-7999. DOI: 10.1063/1.457220  0.336
1989 Okumura M, Rehfuss BD, Dinelli BM, Bawendi MG, Oka T. Difference frequency laser spectroscopy of the ν3 fundamental band of NH+2 The Journal of Chemical Physics. 90: 5918-5923. DOI: 10.1063/1.456357  0.629
1989 Bawendi MG, Rehfuss BD, Dinelli BM, Okumura M, Oka T. Observation and analysis of the ν3 band of NH+3 The Journal of Chemical Physics. 90: 5910-5917. DOI: 10.1063/1.456356  0.706
1988 Oka T. Infrared spectroscopy of carbo-ions Philosophical Transactions of the Royal Society A. 324: 81-95. DOI: 10.1098/Rsta.1988.0002  0.353
1988 Rehfuss BD, Liu D, Dinelli BM, Jagod M, Ho WC, Crofton MW, Oka T. Infrared spectroscopy of carbo‐ions. IV. The A 2Πu–X 2Σ+g electronic transition of C−2 Journal of Chemical Physics. 89: 129-137. DOI: 10.1063/1.455731  0.674
1988 Chen Y, Oka T. Stark and Zeeman effects in ethylene observed by sub‐Doppler infrared spectroscopy The Journal of Chemical Physics. 88: 5282-5290. DOI: 10.1063/1.454586  0.377
1988 Crofton MW, Jagod M, Rehfuss BD, Kreiner WA, Oka T. Infrared spectroscopy of carbo‐ions. III. ν3 band of methyl cation CH+3 Journal of Chemical Physics. 88: 666-678. DOI: 10.1063/1.454194  0.378
1988 Frye JM, Magerl G, Kreiner WA, Oka T. Vibration‐induced first‐order Stark effect in tetrahedral molecules: SiH4 and SiF4 Journal of Chemical Physics. 88: 730-737. DOI: 10.1063/1.454152  0.385
1988 Haese NN, Liu D, Oka T. The ν2 1− ← 0+ band of H318O+ Journal of Molecular Spectroscopy. 130: 262-263. DOI: 10.1016/0022-2852(88)90300-1  0.633
1988 Pursell C, Ho W, Scappini F, Oka T. Infrared-radiofrequency double resonance spectroscopy of CH3F using a color center laser Journal of Molecular Spectroscopy. 131: 241-249. DOI: 10.1016/0022-2852(88)90235-4  0.359
1988 Liu D, Lee S, Oka T. The ν3 fundamental band of HCNH+ and the 2ν3 ← ν3 and ν2 + ν3 ← ν2 hot bands of HCO+ Journal of Molecular Spectroscopy. 128: 236-249. DOI: 10.1016/0022-2852(88)90221-4  0.663
1988 Dinelli BM, Crofton MW, Oka T. Infrared spectroscopy of the ν3 band of H2O+ Journal of Molecular Spectroscopy. 127: 1-11. DOI: 10.1016/0022-2852(88)90003-3  0.439
1987 Scappini F, Kreiner WA, Frye JM, Oka T. Vibrationally induced nuclear quadrupole coupling in the v3=1 state of 189OsO4 Journal of Chemical Physics. 87: 5644-5648. DOI: 10.1063/1.453537  0.326
1987 Liu D, Ho W, Oka T. Rotational spectroscopy of molecular ions using diode lasers The Journal of Chemical Physics. 87: 2442-2446. DOI: 10.1063/1.453084  0.641
1987 Crofton MW, Oka T. Observation of forbidden transitions of ammonium ion (NH+4) ν3 band and determination of ground state rotational constants. Observation of ν3 band allowed transitions of ND+4 The Journal of Chemical Physics. 86: 5983-5988. DOI: 10.1063/1.452484  0.406
1987 Crofton MW, Jagod M, Rehfuss BD, Oka T. Infrared spectra of carboions. II. ν3 band of acetylene ion C2H+2(2Πu) Journal of Chemical Physics. 86: 3755-3756. DOI: 10.1063/1.451929  0.396
1987 Ho W, Blom CE, Liu D, Oka T. The infrared ν5 band (HNC bend) of protonated hydrogen cyanide, HCNH+ Journal of Molecular Spectroscopy. 123: 251-253. DOI: 10.1016/0022-2852(87)90275-X  0.641
1987 Ramachandra Rao D, Oka T. Dicke narrowing and pressure broadening in the infrared fundamental band of HCl perturbed by Ar Journal of Molecular Spectroscopy. 122: 16-27. DOI: 10.1016/0022-2852(87)90215-3  0.414
1986 Chen YT, Frye JM, Oka T. Sub-doppler spectroscopy using a multiple-reflection mirror system Journal of the Optical Society of America B: Optical Physics. 3: 935-939. DOI: 10.1364/Josab.3.000935  0.31
1986 Pan F, Oka T. Calculated forbidden rotational spectra of H3(+) The Astrophysical Journal. 305: 518. DOI: 10.1086/164264  0.306
1986 Rehfuss BD, Crofton MW, Oka T. Infrared spectrum of the fundamental vibration–rotation band of OD− Journal of Chemical Physics. 85: 1785-1788. DOI: 10.1063/1.451179  0.399
1986 Liu D, Oka T, Sears TJ. The calculated ν2 (inversion) spectrum of H3O+ The Journal of Chemical Physics. 84: 1312-1316. DOI: 10.1063/1.450522  0.674
1986 Liu D, Oka T. Observation of the rotational spectrum of OH Journal of Chemical Physics. 84: 2426-2427. DOI: 10.1063/1.450357  0.656
1986 Jörissen L, Kreiner W, Chen Y, Oka T. Observation of ground state rotational transitions in silicon tetrafluoride Journal of Molecular Spectroscopy. 120: 233-235. DOI: 10.1016/0022-2852(86)90084-6  0.336
1985 Crofton MW, Kreiner WA, Jagod M, Rehfuss BD, Oka T. Observation of the infrared spectrum of methyl cation CH+3 Journal of Chemical Physics. 83: 3702-3703. DOI: 10.1063/1.449125  0.373
1985 Liu D, Haese NN, Oka T. Infrared spectrum of the ν2 vibration‐inversion band of H3O+ Journal of Chemical Physics. 82: 5368-5372. DOI: 10.1063/1.448620  0.679
1985 Crofton MW, Altman RS, Jagod MF, Oka T. Infrared spectrum of the fundamental vibration-rotation band of 3.SIGMA.- oxoniumylidene (OH+) The Journal of Physical Chemistry. 89: 3614-3617. DOI: 10.1021/J100263A010  0.418
1985 Altman RS, Crofton MW, Oka T. HIGH RESOLUTION INFRARED SPECTROSCOPY OF THE ν1 (NH STRETCH) AND ν2 (CH STRETCH) BANDS OF PROTONATED HYDROGEN CYANIDE (HCNH Cheminform. 16. DOI: 10.1002/Chin.198514045  0.386
1984 Watson JKG, Foster SC, McKellar ARW, Bernath P, Amano T, Pan FS, Crofton MW, Altman RS, Oka T. The infrared spectrum of the ν2 fundamental band of the molecular ion Canadian Journal of Physics. 62: 1875-1885. DOI: 10.1139/P84-231  0.436
1984 Altman RS, Crofton MW, Oka T. High resolution infrared spectroscopy of the ν1 (NH stretch) and ν2 (CH stretch) bands of HCNH+ The Journal of Chemical Physics. 81: 4255-4258. DOI: 10.1063/1.447433  0.414
1984 Altman RS, Crofton MW, Oka T. Observation of the infrared ν2 band (CH stretch) of protonated hydrogen cyanide HCNH+ The Journal of Chemical Physics. 80: 3911-3912. DOI: 10.1063/1.447173  0.369
1984 Haese NN, Oka T. Observation of the ν2(1−←0+) inversion mode band in H3O+by high resolution infrared spectroscopy The Journal of Chemical Physics. 80: 572-573. DOI: 10.1063/1.446436  0.386
1984 Magerl G, Schupita W, Frye JM, Kreiner WA, Oka T. Sub-doppler spectroscopy of the ν2 band of NH3 using microwave modulation sidebands of CO2 laser lines Journal of Molecular Spectroscopy. 107: 72-83. DOI: 10.1016/0022-2852(84)90266-2  0.395
1984 Scappini F, Kreiner WA, Frye JM, Oka T. Radiofrequency-infrared double-resonance spectroscopy of OsO4 using microwave modulation sidebands on CO2 laser lines Journal of Molecular Spectroscopy. 106: 436-440. DOI: 10.1016/0022-2852(84)90174-7  0.308
1984 Altman RS, Crofton MW, Oka T. OBSERVATION OF THE INFRARED ν2 BAND (CARBON-HYDROGEN(CH) STRETCH) OF PROTONATED HYDROGEN CYANIDE, HCNH+ Cheminform. 15. DOI: 10.1002/Chin.198435049  0.334
1983 Magerl G, Frye JM, Kreiner WA, Oka T. Inverse Lamb dip spectroscopy using microwave modulation sidebands of CO2 laser lines Applied Physics Letters. 42: 656-658. DOI: 10.1063/1.94062  0.351
1983 Crofton MW, Oka T. Infrared studies of molecular ions. I. The ν3 band of NH4 Journal of Chemical Physics. 79: 3157-3158. DOI: 10.1063/1.446147  0.413
1983 Fabris AR, Oka T. Microwave studies of collision‐induced transitions between rotational levels. VIII. Collisions between NH3 and polar molecules Journal of Chemical Physics. 78: 3462-3466. DOI: 10.1063/1.445168  0.347
1982 Arimondo E, Oka T. Study of microwave transitions in intracavity absorbers with the use of off-resonant response of infrared lasers Physical Review A. 26: 1494-1504. DOI: 10.1103/Physreva.26.1494  0.35
1982 Oka T. Intracavity infrared-microwave double-resonance spectroscopy Philosophical Transactions - Royal Society. Mathematical, Physical and Engineering Sciences. 307: 591-601. DOI: 10.1098/Rsta.1982.0132  0.307
1982 Rackley S, Butcher R, Römheld M, Freund S, Oka T. Laser Stark spectroscopy of methyl cyanide in the 10-μm region: Analysis of the ν4 and ν7 bands, and the ν7, 3ν81 interaction Journal of Molecular Spectroscopy. 92: 203-217. DOI: 10.1002/Chin.198230047  0.35
1981 Oka T. A search for interstellar H+3 Philosophical Transactions of the Royal Society A. 303: 543-549. DOI: 10.1098/Rsta.1981.0223  0.409
1981 Hougen JT, Oka T. Vibrationally induced nuclear quadrupole coupling in tetrahedral and octahedral molecules The Journal of Chemical Physics. 74: 1830-1839. DOI: 10.1063/1.441272  0.348
1981 Scappini F, Oka T. Radiofrequency spectroscopy of AsH3 inside a CO2N2O laser cavity Journal of Molecular Spectroscopy. 85: 390-398. DOI: 10.1016/0022-2852(81)90211-3  0.398
1980 Oka T. Observation of the infrared spectrum of H 3 Physical Review Letters. 45: 531-534. DOI: 10.1103/Physrevlett.45.531  0.434
1980 Arimondo E, Baker J, Glorieux P, Oka T, Sakai J. Radiofrequency spectroscopy inside a laser cavity: Nuclear quadrupole resonance and A1-A2 splitting of CH3Br Journal of Molecular Spectroscopy. 82: 54-72. DOI: 10.1016/0022-2852(80)90099-5  0.393
1980 Orr J, Oka T. Doppler-free optical double resonance spectroscopy using a single-frequency laser and modulation sidebands Applied Physics. 21: 293-306. DOI: 10.1007/Bf00895918  0.321
1979 MacLeod JM, Avery LW, Broten NW, Oka T. Failure to confirm the existence of interstellar methylamine-D (CH/sub 3/NHD) The Astrophysical Journal. 231: 401-403. DOI: 10.1086/157203  0.336
1979 Avery LW, Oka T, Broten NW, MacLeod JM. Cyanodiacetylene (HC/sub 5/N) in Sagittarius B2 The Astrophysical Journal. 231: 48-54. DOI: 10.1086/157162  0.34
1979 Takami M, Jones H, Oka T. Transition dipole moments of NH3 in excited vibrational states determined by laser Stark spectroscopy The Journal of Chemical Physics. 70: 3557-3558. DOI: 10.1063/1.437894  0.364
1979 Watson JKG, Takami M, Oka T. Rotational dependence of the dipole moment of CH3D The Journal of Chemical Physics. 70: 5376-5380. DOI: 10.1063/1.437470  0.35
1979 Bernard P, Oka T. A study of the K = 3n A1 - A2 centrifugal splitting in the 3ν2 and 4ν2 states of PH3 using a difference-frequency laser system Journal of Molecular Spectroscopy. 75: 181-196. DOI: 10.1016/0022-2852(79)90115-2  0.358
1978 Oka T. The prediction of the rotational constants of polyacetylene compounds H(CC)nCN Journal of Molecular Spectroscopy. 72: 172-174. DOI: 10.1016/0022-2852(78)90054-1  0.308
1977 Orr BJ, Oka T. Doppler‐free optical double‐resonance Stark spectroscopy using modulation sidebands Applied Physics Letters. 30: 468-470. DOI: 10.1063/1.89451  0.343
1977 Kreiner WA, Andresen U, Oka T. Infrared‐microwave double resonance spectroscopy of GeH4 The Journal of Chemical Physics. 66: 4662-4665. DOI: 10.1063/1.433721  0.382
1977 Arimondo E, Glorieux P, Oka T. Observation of inverted infrared lamb dips in separated optical isomers Optics Communications. 23: 369-372. DOI: 10.1016/0030-4018(77)90384-4  0.346
1977 Orr B, Oka T. Determination of electric dipole moment for the ν2 vibrational state of 15NH3 by infrared-infrared double resonances Journal of Molecular Spectroscopy. 66: 302-313. DOI: 10.1016/0022-2852(77)90219-3  0.381
1977 Landsberg B, Merer A, Oka T. Infrared spectroscopy of short-lived molecules Journal of Molecular Spectroscopy. 67: 459-475. DOI: 10.1016/0022-2852(77)90052-2  0.335
1976 Freund SM, Oka T. Infrared-microwave two-photon spectroscopy: Theν2band of NH3 Physical Review A. 13: 2178-2190. DOI: 10.1103/Physreva.13.2178  0.303
1976 Broten NW, MacLeod JM, Oka T, Avery LW, Brooks JW, McGee RX, Newton LM. Evidence for weak maser action in interstellar cyanodiacetylene The Astrophysical Journal. 209. DOI: 10.1086/182285  0.381
1976 Avery LW, Broten NW, MacLeod JM, Oka T, Kroto HW. Detection of the heavy interstellar molecule cyanodiacetylene. The Astrophysical Journal. 205. DOI: 10.1086/182117  0.352
1976 Laughton D, Freund S, Oka T. Δk = ±3 “forbidden” infrared transitions in the ν2-band of NH3 Journal of Molecular Spectroscopy. 62: 263-270. DOI: 10.1016/0022-2852(76)90354-4  0.402
1975 Johns JWC, McKellar ARW, Oka T, Römheld M. Collision‐induced Lamb dips in laser Stark spectroscopy Journal of Chemical Physics. 62: 1488-1496. DOI: 10.1063/1.430610  0.376
1974 Doherty LH, MacLeod JM, Oka T. Detection of the 10.464-GHz transition of-interstellar-thioformaldehyde The Astrophysical Journal. 192. DOI: 10.1086/181615  0.317
1974 Chu FY, Oka T. ``Forbidden'' rotational spectra of phosphine and arsine The Journal of Chemical Physics. 60: 4612-4618. DOI: 10.1063/1.1680946  0.303
1974 Oka T. Collision-induced transitions between rotational levels Advances in Atomic and Molecular Physics. 9: 127-206. DOI: 10.1016/S0065-2199(08)60115-3  0.313
1974 Freund S, Duxbury G, Römheld M, Tiedje J, Oka T. Laser Stark spectroscopy in the 10 μm region: The ν3 bands of CH3F Journal of Molecular Spectroscopy. 52: 38-57. DOI: 10.1016/0022-2852(74)90004-6  0.38
1974 FREUND SM, DUXBURY G, ROEMHELD M, TIEDJE JT, OKA T. ChemInform Abstract: LASER STARK SPECTROSCOPY IN THE 10 MU M REGION, THE NU(3) BANDS OF CH3F Chemischer Informationsdienst. 5: no-no. DOI: 10.1002/Chin.197441066  0.333
1973 Freund SM, Johns JWC, McKellar ARW, Oka T. Infrared‐infrared double resonance experiments using a two‐photon technique The Journal of Chemical Physics. 59: 3445-3453. DOI: 10.1063/1.1680501  0.339
1973 Chu F, Freund S, Johns J, Oka T. ΔK = 2 transitions in H2CO and D2CO Journal of Molecular Spectroscopy. 48: 328-335. DOI: 10.1016/0022-2852(73)90197-5  0.339
1972 Freund S, Oka T. Observation of the inverse Lamb dip for infrared‐microwave two‐photon transitions Applied Physics Letters. 21: 60-62. DOI: 10.1063/1.1654279  0.376
1971 Shimizu T, Shimizu FO, Turner R, Oka T. Pressure Broadening Measurement of the ν 2 [qR − (0,0)] Transition of 15NH3 by a CO2 Laser The Journal of Chemical Physics. 55: 2822-2826. DOI: 10.1063/1.1676499  0.36
1971 Oka T, Shimizu T. Observation of Infrared‐Microwave Two‐Photon Transitions in NH3 Applied Physics Letters. 19: 88-90. DOI: 10.1063/1.1653846  0.318
1970 Oka T, Shimizu T. Microwave Double-Photon Transitions in CD3CN and PF3 Physical Review A. 2: 587-593. DOI: 10.1103/Physreva.2.587  0.324
1968 Oka T. Microwave Studies of Collision‐Induced Transitions between Rotational Levels. V. “Selection Rules” in NH3–Rare‐Gas Collisions Journal of Chemical Physics. 49: 3135-3145. DOI: 10.1063/1.1670561  0.34
1968 Oka T. Microwave Studies of Collision‐Induced Transitions between Rotational Levels. IV. Steady‐State Measurements in NH3 Journal of Chemical Physics. 48: 4919-4928. DOI: 10.1063/1.1668157  0.358
1967 Oka T. Microwave Studies of Collision‐Induced Transitions between Rotational Levels. II. Observations in H2CO, HCN, and H2CCO Journal of Chemical Physics. 47: 13-26. DOI: 10.1063/1.1711838  0.372
1967 Oka T. Microwave Studies of Collision‐Induced Transitions between Rotational Levels. III. Observation of Preferred Quadrupole‐Type Transitions in NH3–He Collision The Journal of Chemical Physics. 47: 4852-4853. DOI: 10.1063/1.1701712  0.334
1966 Oka T. Observation of ΔJ =3 ``Forbidden'' Transition in Ethyl Iodide by the Use of Double Resonance Journal of Chemical Physics. 45: 752-753. DOI: 10.1063/1.1727638  0.306
1965 Kuchitsu K, Oka T, Morino Y. Calculation of inertia defect Journal of Molecular Spectroscopy. 15: 51-67. DOI: 10.1016/0022-2852(65)90187-6  0.344
1964 Oka T, Tsuchiya K, Iwata S, Morino Y. Microwave Spectrum ofs-Trioxane Bulletin of the Chemical Society of Japan. 37: 4-7. DOI: 10.1246/Bcsj.37.4  0.341
1964 Oka T, Takagi K, Morino Y. Microwave spectrum of formaldehyde in vibrationally excited states Journal of Molecular Spectroscopy. 14: 27-52. DOI: 10.1016/0022-2852(64)90098-0  0.411
1964 Toyama M, Oka T, Morino Y. Effect of vibration and rotation on the internuclear distance Journal of Molecular Spectroscopy. 13: 193-213. DOI: 10.1016/0022-2852(64)90067-0  0.317
1963 Takagi K, Oka T. Millimeter Wave Spectrum of Formaldehyde Journal of the Physical Society of Japan. 18: 1174-1180. DOI: 10.1143/Jpsj.18.1174  0.373
1963 Oka T, Morino Y. Inertia defect Journal of Molecular Spectroscopy. 11: 349-367. DOI: 10.1016/0022-2852(63)90036-5  0.317
1962 Matsumura C, Hirota E, Oka T, Morino Y. Microwave spectrum of acetonitrile-d3, CD3CN Journal of Molecular Spectroscopy. 9: 366-380. DOI: 10.1016/0022-2852(62)90244-8  0.382
1962 Oka T, Morino Y. Calculation of inertia defect Journal of Molecular Spectroscopy. 8: 9-21. DOI: 10.1016/0022-2852(62)90002-4  0.331
1961 Oka T, Morino Y. Microwave Spectrum of Formaldehyde III. Vibration-Rotation Interaction Journal of the Physical Society of Japan. 16: 1235-1242. DOI: 10.1143/Jpsj.16.1235  0.345
1961 Oka T, Morino Y. Calculation of inertia defect Journal of Molecular Spectroscopy. 6: 472-482. DOI: 10.1016/0022-2852(61)90270-3  0.337
1960 Kondo K, Oka T. Stark-Zeeman Effects on Asymmetric Top Molecules. Formaldehyde H2CO. Journal of the Physical Society of Japan. 15: 307-314. DOI: 10.1143/Jpsj.15.307  0.323
1960 Kondo K, Hirakawa H, Miyahara A, Oka T, Shimoda K. Microwave Zeeman Effect of Formaldehyde Journal of the Physical Society of Japan. 15: 303-306. DOI: 10.1143/Jpsj.15.303  0.598
1960 Oka T. Microwave Spectrum of Formaldehyde II. Molecular Structure in the Ground State Journal of the Physical Society of Japan. 15: 2274-2279. DOI: 10.1143/Jpsj.15.2274  0.432
1960 Oka T, Hirakawa H, Shimoda K. Microwave Spectrum of Formaldehyde I.K-type Doubling Spectra Journal of the Physical Society of Japan. 15: 2265-2273. DOI: 10.1143/Jpsj.15.2265  0.663
1957 Oka T, Hirakawa H. Microwave Spectrum of BrCN and Dependence of Quadrupole Coupling Constant on the Vibrational State Journal of the Physical Society of Japan. 12: 820-823. DOI: 10.1143/Jpsj.12.820  0.369
1957 Oka T, Hirakawa H, Miyahara A. Dependence of Quadrupole Coupling Constant on the Vibrational State in ICN Molecule Journal of the Physical Society of Japan. 12: 39-42. DOI: 10.1143/Jpsj.12.39  0.348
1956 Hirakawa H, Oka T, Shimoda K. l-type Doubling Spectra of HCN and DCN Journal of the Physical Society of Japan. 11: 1208B-1208B. DOI: 10.1143/Jpsj.11.1208B  0.585
1956 Hirakawa H, Oka T, Shimoda K. Microwave Spectra of Formaldehyde -d1-d2 Journal of the Physical Society of Japan. 11: 1207-1207. DOI: 10.1143/Jpsj.11.1207  0.564
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