Theoretical study of nonresonant sup 3 He sup + + sup 4 He r reversible sup 3 He+ sup 4 He sup + charge transfer in the threshold region

A quantum-mechanical calculation of charge-transfer cross sections for the forward (endothermic) and backward (exothermic) collision processes {sup 3}He{sup +}+{sup 4}He {r reversible} {sup 3}He+{sup 4}He{sup +} in the threshold energy region has been carried out by using a two-state close-coupling...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 1992-10, Vol.46:7
Main Authors: Dutta, C.M., Lane, N.F., Kimura, M.
Format: Article
Language:English
Subjects:
664300 - Atomic & Molecular Physics- Collision Phenomena- (1992-)
ATOM COLLISIONS
ATOMIC AND MOLECULAR PHYSICS
CHARGE EXCHANGE
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ENERGY
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HELIUM 3
HELIUM 4
HELIUM IONS
HELIUM ISOTOPES
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
ISOTOPES
LIGHT NUCLEI
NUCLEI
STABLE ISOTOPES
THRESHOLD ENERGY
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A quantum-mechanical calculation of charge-transfer cross sections for the forward (endothermic) and backward (exothermic) collision processes {sup 3}He{sup +}+{sup 4}He {r reversible} {sup 3}He+{sup 4}He{sup +} in the threshold energy region has been carried out by using a two-state close-coupling treatment where the charge-transfer energy defect, approximately 1.3 meV, is the isotopic term difference between the {sup 3}He and {sup 4}He binding energies. The cross sections show numerous shape and orbiting resonances, which can be labeled with predissociation rotational and vibrational quantum numbers. From these cross sections, the forward and backward rate coefficients have been calculated. The present results, particularly the ratio of forward and backward rate coefficients, agree well with measurements of Schauer, Jefferts, and Dunn (Phys. Rev. A 42, 5332 (1990)).
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.46.3889