Electronic-energy exchange cross sections for Ar* ($sup 3$P) and Kr($sup 1$S)

Journal Article · Sun Feb 15 04:00:00 EST 1976 · J. Chem. Phys., v. 64, no. 4, pp. 1724-1732

OSTI ID:4001098

Winicur, D H; Fraites, J L; Bentley, J

Differential cross sections for Ar* scattered by Kr are obtained at four relative kinetic energies, 60.6--156 meV. Location and shape of rainbow maxima, observed at all the energies, are used to determine parameters for a double- Lennard-Jones potential. The parameters, epsilon=9.11+-0.25 meV and r/subm/ =5.06+-0.84 A, are the same as those for K+Kr and are substantially different from those of Ar+Kr. A second set of maxima, visible at all energies and caused by exchange of electronic energy from Ar* to Kr, are analyzed to determine electronic-energy exchange cross sections. The cross sections together with those obtained from thermal-energy quenching measurements are consistent with an increase from a threshold of 25 meV. Possible mechanisms for the electronic- energy exchange are discussed. (AIP)

• Research Organization: Chemistry Department and the Radiation Laboratory, University of Notre Dame, Notre Dame, Indiana 46556
• NSA Number: NSA-33-027263
• OSTI ID: 4001098
• Journal Information: J. Chem. Phys., v. 64, no. 4, pp. 1724-1732, Journal Name: J. Chem. Phys., v. 64, no. 4, pp. 1724-1732; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

*ARGON-- ATOM-ATOM COLLISIONS
*KRYPTON-- ATOM-ATOM COLLISIONS
640304* --Physics Research--Atomic
Molecular & Chemical Physics--Collision Phenomena
DIFFERENTIAL CROSS SECTIONS
ENERGY TRANSFER
INTERATOMIC FORCES
MILLI EV RANGE
N60400* --Physics (Atomic & Molecular)--Collision Phenomena