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Title: ''Destruction'' of hydrogen atom by collisions with multiply charged ions

Abstract

A calculation is reported of the total cross section of ''destruction'' of a hydrogen atom by collision with a multiply charged ion (Z>>1). The partial cross sections representing charge exchange between a hydrogen atom and a multiply charged ion are calculated using perturbation theory for collision velocities low compared with e/sup 2//h (e is the electron charge and h is the Planck constant). The total charge-exchange cross section is compared with the results of a model in which the number of final states of a multiply charged ion is regarded as infinite. The criterion of validity of this model is determined. The coordinate and time dependences of the argument of the exponential electron wave function are determined for collision velocities low compared with Z/sup 1/2/ e/sup 2/ /h (Z is the ion charge) using the quasiclassical Keldysh method. The ionization cross section of a hydrogen atom colliding with a multiply charged ion is calculated for collision velocities high compared with Z/sup 1/2/ e/sup 2/ /h. Matching of these cross sections makes it possible to determine the total destruction cross section of a hydrogen atom colliding with a multiply charged ion, which is valid in a wide range of collision velocities.

Authors:
; ;
Publication Date:
OSTI Identifier:
5827400
Alternate Identifier(s):
OSTI ID: 5827400
Resource Type:
Journal Article
Journal Name:
Sov. Phys. - JETP (Engl. Transl.); (United States)
Additional Journal Information:
Journal Volume: 49:2
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; HYDROGEN; ION-ATOM COLLISIONS; MULTICHARGED IONS; CHARGE EXCHANGE; ENERGY DEPENDENCE; IONIZATION; PERTURBATION THEORY; TOTAL CROSS SECTIONS; ATOM COLLISIONS; CHARGED PARTICLES; COLLISIONS; CROSS SECTIONS; CRYOGENIC FLUIDS; ELEMENTS; FLUIDS; ION COLLISIONS; IONS; NONMETALS 640304* -- Atomic, Molecular & Chemical Physics-- Collision Phenomena

Citation Formats

Duman, E.L., Men'shikov, L.I., and Smirnov, B.M. ''Destruction'' of hydrogen atom by collisions with multiply charged ions. United States: N. p., 1979. Web.
Duman, E.L., Men'shikov, L.I., & Smirnov, B.M. ''Destruction'' of hydrogen atom by collisions with multiply charged ions. United States.
Duman, E.L., Men'shikov, L.I., and Smirnov, B.M. Thu . "''Destruction'' of hydrogen atom by collisions with multiply charged ions". United States.
@article{osti_5827400,
title = {''Destruction'' of hydrogen atom by collisions with multiply charged ions},
author = {Duman, E.L. and Men'shikov, L.I. and Smirnov, B.M.},
abstractNote = {A calculation is reported of the total cross section of ''destruction'' of a hydrogen atom by collision with a multiply charged ion (Z>>1). The partial cross sections representing charge exchange between a hydrogen atom and a multiply charged ion are calculated using perturbation theory for collision velocities low compared with e/sup 2//h (e is the electron charge and h is the Planck constant). The total charge-exchange cross section is compared with the results of a model in which the number of final states of a multiply charged ion is regarded as infinite. The criterion of validity of this model is determined. The coordinate and time dependences of the argument of the exponential electron wave function are determined for collision velocities low compared with Z/sup 1/2/ e/sup 2/ /h (Z is the ion charge) using the quasiclassical Keldysh method. The ionization cross section of a hydrogen atom colliding with a multiply charged ion is calculated for collision velocities high compared with Z/sup 1/2/ e/sup 2/ /h. Matching of these cross sections makes it possible to determine the total destruction cross section of a hydrogen atom colliding with a multiply charged ion, which is valid in a wide range of collision velocities.},
doi = {},
journal = {Sov. Phys. - JETP (Engl. Transl.); (United States)},
number = ,
volume = 49:2,
place = {United States},
year = {1979},
month = {2}
}