Open AccessCHARGE TRANSFER FOR PROTON AND α PARTICLE COLLIDING WITH HELIUM ATOM AT INTERMEDIATE ENERGIES
Author(s) -
Xiaoxin Zhou,
Baiwen Li
Publication year - 1999
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.48.1426
Subject(s) - atomic physics , physics , born approximation , electron capture , electron , charge (physics) , perturbation theory (quantum mechanics) , proton , atom (system on chip) , helium , transfer (computing) , helium atom , nuclear physics , quantum mechanics , parallel computing , computer science , embedded system
Charge transfer processes for double-electron colliding systems H++He and He2++He have been studied by using the asymptotic two-state atomic expansion method developed recently. Our results for the cross sections of electron capture are in good agreement with those given by the boundary-corrected first-order Born (B1B) approximation and experimental data in high-intermediate energies, and in the low-intermediate energies the present results are better than those obtained by the B1B approximation. Finally, we point out that the reason that capture cross sections predicted by first-order perturbation theory are in poor agreement with experimental data.