Alignment of CH{sub 3}F in para-H{sub 2} crystal studied by IR quantum cascade laser polarization spectroscopy

Journal Article · Sat May 14 00:00:00 EDT 2016 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.4948633· OSTI ID:22657987

Kawasaki, Hiroyuki; Mizoguchi, Asao; Kanamori, Hideto ^[1]

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1. Department of Physics, Tokyo Institute of Technology, Ohokayama 2-12-1, Tokyo 152-8551 (Japan)

In order to investigate the alignment of CH{sub 3}F in para-H{sub 2} crystals, high resolution polarization spectroscopy of the ν{sub 3} vibrational band is studied using a quantum cascade laser at 1040 cm{sup −1}. It is found that the main and satellite series of peaks in the ν{sub 3} vibrational band of CH{sub 3}F have the same polarization dependence. This result supports the previously proposed cluster model with ortho-H{sub 2} in first and second nearest neighbor sites. The observed polarization dependence function is well described by a simple six-axis void model in which CH{sub 3}F is not aligned along the c-axis of the crystal but tilted to 64.9(3)° from it.

• OSTI ID: 22657987
• Journal Information: Journal of Chemical Physics, Vol. 144, Issue 18; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALIGNMENT
CATALYST SUPPORTS
CLUSTER MODEL
CRYSTALS
METHYL FLUORIDE
POLARIZATION
VIBRATIONAL STATES