ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
This paper reports the first measurements at low temperatures (44–137 K) of rate coefficients for collision induced spin-orbit transitions, using a swarm experiment consisting of a uniform supersonic flow coupled with pulsed laser photolysis and laser-induced fluorescence techniques. It has been stated that both excitation and relaxation rates have a positive temperature dependence. The excitation (respectively relaxation) rate constant is 0.15×10−12 cm3 s−1 (respectively 1.63×10−12) at 53 K and 2.76×10−12 cm3 s−1 (respectively 4.48×10−12) at 137 K. A theoretical modelization of the Al–Ar system has been developed in the 30–300 K range, that reproduces the temperature dependence. © 1998 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.475342
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