Influence of relativistic effects on electron-loss cross sections of heavy and superheavy ions colliding with neutral [atoms.sup.1]

The influence of relativistic effects, such as relativistic interaction and relativistic wave functions, on the electron-loss cross sections of heavy and superheavy atoms and ions (atomic number Z [??] 92) colliding with neutral atoms is investigated using a newly created RICODE-M computer program....

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Bibliographic Details
Published in:Journal of experimental and theoretical physics 2014-07, Vol.119 (1), p.1
Main Authors: Tolstikhina, I.Yu, Tupitsyn, I.I, Andreev, S.N, Shevelko, V.P
Format: Article
Language:English
Subjects:
Collisions (Nuclear physics)
Comparative analysis
Electrons
Online Access:Get full text
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Summary:The influence of relativistic effects, such as relativistic interaction and relativistic wave functions, on the electron-loss cross sections of heavy and superheavy atoms and ions (atomic number Z [??] 92) colliding with neutral atoms is investigated using a newly created RICODE-M computer program. It is found that the use of relativistic wave functions changes the electron-loss cross section values by about 20-30% around the cross-section maximum compared to those calculated with nonrelativistic wave functions. At relativistic energies E ≥ 200 MeV/u, the relativistic interaction between colliding particles leads to a quasiconstant behavior of the loss cross sections [σ.sup.rel.sub.EL] ~ const, to be compared with the Born asymptotic law [σ.sup.B.sub.EL] ~ lnE/E.
ISSN:1063-7761
1090-6509
DOI:10.1134/S1063776114060211