Charge exchange with ion excitation: asymptotic theory

Journal Article · Tue Sep 01 04:00:00 EDT 1987 · Opt. Spectrosc. (Engl. Transl.); (United States)

OSTI ID:5161177

Ivakin, I A; Karbovanets, M I; Ostrovskii, V N

There is developed an asymptotic (with respect to the large internuclear separation R) theory for computing the matrix element of the exchange interaction between states of quasimolecules, which is responsible for charge transfer with ion excitation: B/sup +/+A..-->..B+A/sup +/*. A semiclassical approximation is used, which enables one to apply the theory to processes with the participation of multiply charged ions. The case of s--s transitions for excitation of the ion A/sup +/..-->..A/sup +/*, where it is appropriate to take into account the distortion of the wave functions of the ion A/sup +/ by the particle B, is treated separately. Calculations of cross sections and comparison with the results of experiments for He/sup +/--Cd and Ne/sup +/--Mg collisions at thermal energies are given. It is shown that it is impossible to explain the experimental data by the interaction of terms of the quasimolecules at large R only, and a possible mechanism for populating at small R is proposed.

• Research Organization: Alberta Telecommunications Research Centre, 200, 4245 97th Street, Edmonton, Alberta, Canada T6J 1Y5
• OSTI ID: 5161177
• Journal Information: Opt. Spectrosc. (Engl. Transl.); (United States), Journal Name: Opt. Spectrosc. (Engl. Transl.); (United States) Vol. 63:3; ISSN OPSUA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKALINE EARTH METALS
ATOM COLLISIONS
ATOMIC IONS
CADMIUM
CHARGE EXCHANGE
CHARGED PARTICLES
COLLISIONS
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EXCITATION
HELIUM IONS
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
MAGNESIUM
METALS
NEON IONS