M
Mitchio Okumura
Researcher at California Institute of Technology
Publications - 106
Citations - 4695
Mitchio Okumura is an academic researcher from California Institute of Technology. The author has contributed to research in topics: Spectroscopy & Infrared spectroscopy. The author has an hindex of 33, co-authored 102 publications receiving 4426 citations. Previous affiliations of Mitchio Okumura include University of California & University of California, Berkeley.
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Journal ArticleDOI
The vibrational predissociation spectroscopy of hydrogen cluster ions
TL;DR: In this paper, the infrared spectroscopy of cluster ions has been used to obtain the first spectroscopic observation of the protonated hydrogen clusters H n + (n=5,7,9,11,13 and 15).
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Infrared spectroscopy of the cluster ions H + 3·(H2)n
TL;DR: In this paper, the vibrational spectra of the clusters H + 3 (H2)n were observed near 4000 cm−1 by vibrational predissociation spectroscopy and the red shift of these vibrations relative to the monomer H2 frequency supported the model of H + 9 as an H+ 3 with a complete inner solvation shell of three H2, one bound to each corner of the ion.
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Negative-Ion Photoelectron Spectroscopy, Gas-Phase Acidity, and Thermochemistry of the Peroxyl Radicals CH3OO and CH3CH2OO
Stephen J. Blanksby,T. M. Ramond,Gustavo E. Davico,Mark R. Nimlos,Shuji Kato,Veronica M. Bierbaum,W. C. Lineberger,G. B. Ellison,Mitchio Okumura +8 more
TL;DR: In this article, a deprotonation of methyl, methyl-d3, and ethyl hydroperoxide anions (CH_3OO, CD-3OO-, and CH_3CH_2OO-) was used to measure the adiabatic electron affinities.
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Mid-Infrared Time-Resolved Frequency Comb Spectroscopy of Transient Free Radicals
TL;DR: Time-resolved frequency comb spectroscopy (TRFCS) is demonstrated, a new broadband absorptionSpectroscopy technique for the study of trace free radicals on the microsecond timescale that allows for the unraveling of primary and secondary chemical reaction pathways.
Journal ArticleDOI
Rate of Gas Phase Association of Hydroxyl Radical and Nitrogen Dioxide
Andrew K. Mollner,Sivakumaran Valluvadasan,Lin Feng,Matthew K. Sprague,Mitchio Okumura,Daniel B. Milligan,William J. Bloss,Stanley P. Sander,Philip T. Martien,Robert A. Harley,Anne B. McCoy,William P. L. Carter +11 more
TL;DR: The result is a significantly more precise value of the rate constant for the HONO2 formation channel, 9.2 (±0.4) × 10−12 cm3 molecule−1 s−1 (1 SD) at 760 torr of air, which lies toward the lower end of the previously established range.