Electronic Resource
College Park, Md.
:
American Institute of Physics (AIP)
The Journal of Chemical Physics
87 (1987), S. 4371-4375
ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
Infrared spectroscopy, fluorescence, and incoherent saturation experiments have been performed on matrix-isolated BH2D−2. We find that the 942 cm−1 vibrational mode of this molecule in KBr is unsaturable up to laser pump intensities of 1 MW/cm2 in marked contrast with the earlier measurements on ReO−4, which give a saturation intensity of 55 W/cm2. The different behavior for the light molecule is a result of one-phonon decay to a nearby lower-lying internal vibrational mode. Because of the small moment of inertia of the molecule high frequency librational modes provide a third-order decay channel between this lowest frequency internal vibrational mode and the ground state.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.452896
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