Atomic, Molecular, and Optical Physics Seminar

Spectroscopy and Dynamics of Molecules in Solid Hydrogen

Takamasa Momose

Kyoto University

Solid hydrogen, known as a quantum crystal, is an exceptional crystal, in which high-resolution spectroscopy can be applied to atoms and molecules. Ro-vibrational motion of molecules embedded in the crystal is fully quantized as in the gas phase on account of the weak interaction and softness of the crystal being characteristics of quantum crystals. The spectral linewidths of rovibrational transitions are as narrow as 100 MHz (0.003 cm-1). The sharp spectral linewidths allow us to discuss intermolecular interactions and molecular motions in the condensed phase in great detail. This talk will survey what we have learned from the high-resolution infrared spectroscopy of molecules embedded in solid hydrogen. The topics include perturbations to rotational motion of dopant molecules, reduction of rotational constants, vibrational dephasing and relaxation, and chemical dynamics of unstable molecules in the low temperature crystal.

Monday, July 28, 2003
4:00 PM
Gant Science Complex
Physics Department
Room P121

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