Rare gas--halogen atom interaction potentials from crossed molecular beams experiments: I(/sup 2/P/sub 3/2/)+Kr, Xe(/sup 1/S/sub 0/)

Journal Article · Sun Aug 15 00:00:00 EDT 1982 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.444040· OSTI ID:5020860

Casavecchia, P; He, G; Sparks, R K; Lee, Y T

Angular distributions of I(/sup 2/P/sub 3/2/) scattered off Kr and Xe(/sup 1/S/sub 0/) in the thermal energy range have been measured in crossed molecular beams experiments. The interaction potentials for two relevant states (X 1/2 and I 3/2) for each of the systems are obtained by using an approximate elastic scattering analysis, which neglects nonadiabatic coupling, as previously done for other rare gas--halogen systems. The I--Xe (X 1/2) potential (epsilon-c = 0.69 kcal/mol, r/sub m/ = 4.30 A) and, to some extent, I--Kr (X 1/2) potential (epsilon-c = 0.55 kcal/mol, r/sub m/ = 4.05 A) shows a slightly more attractive interaction than the interaction potentials of Xe--Xe and Xe--Kr, but the I--Xe (I 3/2) potential (epsilon-c = 0.48 kcal/mol, r/sub m/ = 4.60 A) and the I--Kr (I 3/2) potential (epsilon-c = 0.36 kcal/mol, r/sub m/ = 4.32 A) present shallower epsilon-c's, a larger r/sub m/, and stronger repulsive walls than the corresponding rare gas pair potentials. The results obtained from this and previous investigations are reviewed.

• Research Organization: Materials and Molecular Research Division, Lawrence Berkeley Laboratory and Department of Chemistry, University of California, Berkeley, California 94720
• OSTI ID: 5020860
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 77:4; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
BEAMS
COLLIDING BEAMS
COLLISIONS
DISTRIBUTION
ELASTIC SCATTERING
ELEMENTS
ENERGY LEVELS
FLUIDS
GASES
HALOGENS
INTERATOMIC FORCES
IODINE
KRYPTON
MOLECULAR BEAMS
NONMETALS
P STATES
RARE GASES
S STATES
SCATTERING
XENON