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dc.creatorOkabayashi, Yusukeen_US
dc.creatorTang, Jianen_US
dc.creatorMiyamoto, Yukien_US
dc.creatorKawaguchi, Kentarouen_US
dc.date.accessioned2013-07-16T21:35:32Z
dc.date.available2013-07-16T21:35:32Z
dc.date.issued2013en_US
dc.identifier2013-RH-12en_US
dc.identifier.urihttp://hdl.handle.net/1811/55243
dc.descriptionAuthor Institution: Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-Naka, Okayama 700-8530, Japanen_US
dc.description.abstractTime-resolved double resonance (TRDR) method has been used to study the rotational and vibrational relaxiation for a long time. However, the study of IR-IR TRDR in the 3$\mu$m region has been very limited due to the lack of powerful tunable IR lasers in this region. In the present study, we used a tunable pulsed OPO IR laser (6 mJ@6 ns, $\sim$0.2 cm$^{-1}$ linewidth) and a tunable cw-OPO IR laser (up to 200 mW, $\sim$3 MHz linewidth) both in the 3$\mu$m region to study the IR-IR TRDR for the $\nu_4$ and $2\nu_4-\nu_4$ vibrational bands of CH$_{3}$F. The pulsed IR laser pumps CH$_{3}$F from the ground state to a certain rotational level ($J, K$) of v$_4=1$, and the cw IR laser probes this ($J, K$) level by the $2\nu_4-\nu_4$ ladder transition. A time profile for the transition intensity of the probe line gives the $T_1$ relaxiation time for the ($J, K$) level of v$_4=1$. The pressure dependence of $T_1$ for various ($J, K$) levels of v$_4=1$ was obtained, which can be compared with the linewidth measurement, 2083 (1990).} for the $\nu_4$ band of CH$_{3}$F.en_US
dc.language.isoenen_US
dc.publisherOhio State Universityen_US
dc.titleTIME-RESOLVED IR-IR DOUBLE RESONANCE FOR THE $\nu_4$ and $2\nu_4-\nu_4$ VIBRATION-ROTATION TRANSITIONS OF CH$_{3}$Fen_US
dc.typeArticleen_US
dc.typeImageen_US
dc.typePresentationen_US


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