Interaction potentials for Br(/sup 2/P)+Ar, Kr, and Xe (/sup 1/S) by the crossed molecular beams method

Journal Article · Wed Jul 15 00:00:00 EDT 1981 · J. Chem. Phys.; (United States)

OSTI ID:6333823

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

Angular distributions of Br(/sup 2/P/sub 3/2,1/2/) scattered off Ar, Kr, and Xe (/sup 1/S/sub 0/) in the thermal energy range were measured in crossed molecular beams experiments. Interaction potentials for the X1/2 and I3/2 states are derived by using an approximate elastic scattering analysis, which neglects interstate coupling, as previously done for F--Xe, Kr, Ar, Ne and Cl--Xe. While the Br--Xe X1/2 potential (epsilon = 0.645 kcal/mole, r/sub m/ = 3.80 A) shows a stronger interaction than the interaction potential of Kr--Xe, the Br--Kr (epsilon = 0.460 kcal/mole, r/sub m/ = 3.90 A) and Br--Ar (epsilon = 0.380 kcal/mole, r/sub m/ = 3.73 A) X1/2 potentials are closer to those of the corresponding rare gas pairs. The I3/2 potential for all three systems is found to have a shallower epsilon, a slightly larger r/sub m/, and a more repulsive wall than the /sup 1/..sigma../sup +/ potential of the corresponding rare gas pair. The origin of these interactions is discussed and an attempt to examine the rare gas halides ground state bonding is presented.

• Research Organization: Materials and Molecular Research Division of the Lawrence Berkeley Laboratory
• OSTI ID: 6333823
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 75:2; 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
ARGON
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
BEAMS
BROMINE
COLLIDING BEAMS
COLLISIONS
DATA
DISTRIBUTION
ELASTIC SCATTERING
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
GASES
HALOGENS
INFORMATION
INTERATOMIC FORCES
KRYPTON
MOLECULAR BEAMS
NONMETALS
NUMERICAL DATA
RARE GASES
SCATTERING
XENON