A semiclassical collision modei has been irscd to cafcuhite the rate constant for vibrational reltxrtion in HD fu = 1, j = 0) colIid~ag with 4tie. The He + HD potential surface was obtained from an analyticat He + Hz surface previousfy used for similar c~caIatjons on NC f Hz and He + Dz\_ The fheorc
Comparison of quantum mechanical and semiclassical cross sections and rate constants for vibrational relaxation of N2 and CO colliding with 4He
โ Scribed by Gert Due Billing
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 632 KB
- Volume
- 107
- Category
- Article
- ISSN
- 0301-0104
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๐ SIMILAR VOLUMES
Cross sections and rate constants are calcuhted for the dcactivPtion of the bcndingnbrational mode of the CO2 molccule colliding with Hc and NC. Rcsull\_s obtained using semlclaxical, scmiclxsical sudden and quantum vlbrntion inrmiw order-sudden methods YC compxcd
A tunable dye laser was used to populate selectively a single rotational-vibrational state of N 2 ( B 'E , u' = 0, N' = O-l 5 ) . The population changes induced by collisions with He were determined using time-resolved spectroscopy in a flowing afterglow experiment. Total rotational transfer rates f
Fully converged quantum cross sections for 4He-D2 (u= l,i=O) vibrational reliaxation were determined using the coupled-states method and a modikied version of the Gordon-Secrcst surface. First-order forbidden rotational transitions play a si@fkant role, comparable to that observed previously for the