Experimental verification of the cluster model of CH3F-(ortho-H2)nin solid para-H2by using mid-infrared pump-probe laser spectroscopy.
The bleaching process in the C-F stretching mode (ν3band) of CH3F-(ortho-H2)n[n = 0 and 1] clusters in solid para-H2was monitored using pump and probe laser spectroscopy on the C-H stretching mode (ν1and 2ν5bands). From an analysis of the depleted spectral profiles, the transition frequency and linewidth of each cluster were directly determined. The results agree with the values previously derived from a deconvolution analysis of the broadened ν1/2ν5spectrum observed by FTIR spectroscopy. The complementary increase and decrease between the n = 0 and 1 components were also verified through monitoring the ν1and 2ν5bands, which suggests a closed system among the CH3F-(ortho-H2)nclusters. These observations provide experimental verification of the CH3F-(ortho-H2)ncluster model. On the other hand, a trial to observe the bleaching process by pumping the C-H stretching mode was not successful. This result may be important for understanding the dynamics of vibrational relaxation processes in CH3F-(ortho-H2)nin solid para-H2.
Research Institute for Interdisciplinary Science, Okayama University, Tsushima-naka 3-1-1, Kita-ku, Okayama 700-8530, Japan.
Yuki
Y
Miyamoto
Department of Physics, Tokyo Institute of Technology, Ohokayama 2-12-1, Tokyo 152-8551, Japan.
Asao
A
Mizoguchi
Department of Physics, Tokyo Institute of Technology, Ohokayama 2-12-1, Tokyo 152-8551, Japan.
Hideto
0000000335754462
H
Kanamori