Low Temperature Physics: 29, 866 (2003); https://doi.org/10.1063/1.1619360 (4 pages)
Физика Низких Температур: Том 29, Выпуск 9-10 (Сентябрь 2003), c. 1135-1139    ( к оглавлению , назад )

The vibrational relaxation of CO2 isolated in solid argon

A. Cenian1, G. Grigorian2, and G. Śliwiński 1

1Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Gdansk 80-952, Poland
E-mail: cenian@imp.gda.pl

2Institute of Physics, St. Petersburg State University, St. Petersburg 198504, Russia

Аннотация

For description of the vibrational relaxation of CO2 molecules embedded in Ar matrix the model based on multiphonon transitions is applied. Rates for the VT and VV processes are determined from a fitting of simulated and experimental data. The calculations confirmed that radiative processes influence significantly the vibrational energy relaxation of CO2 embedded in solid Ar, e.g., the determined rate for energy transfer between n3 and n2. mode is significantly lower than that predicted under assumption of the nonradiative relaxation.

PACS:
67.40.Fd - Dynamics of relaxation phenomena