Rate coefficients for collisional population transfer between 3p/sup 5/4p argon levels at 300 /sup 0/K

Journal Article · Sun Oct 01 04:00:00 EDT 1978 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.18.1388· OSTI ID:6920052

Nguyen, T D; Sadeghi, N

The population transfer between excited 3p/sup 5/4p argon levels induced by the collisional process Ar* (3p/sup 5/4p)/sub i/ + Ar(/sup 1/S/sub 0/) arrow-right-left Ar* (3p/sup 5/4p)/sub j/ + Ar(/sup 1/S/sub 0/) + ..delta..E was studied in the afterglow of an argon pulsed discharge, at the pressure range of 0.2--1 Torr. Selective population of one particular argon 3p/sup 5/4p level was achieved by laser excitation from one metastable state by use of a tunable cw dye laser. The populations of the laser-excited level and of the collisional excited levels were determined by intensity measurements of the fluorescence line and of the sensitized fluorescence lines. The time-dependence study of the populations of the metastable state, of the laser-excited state, and of the collisional excited states was carried out to ascertain the product channel and to determine the collisional transfer rate coefficients.

• Research Organization: Laboratoire de Spectrometrie Physique, Universite Scientifique et Medicale de Grenoble, B. P. 53, 38041 Grenoble Cedex, France
• OSTI ID: 6920052
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 18:4; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
AFTERGLOW
ARGON
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
COLLISIONS
ELECTRIC DISCHARGES
ELEMENTS
ENERGY LEVELS
ENERGY TRANSFER
EXCITED STATES
METASTABLE STATES
NONMETALS
RARE GASES