Citation
Jz. Mezei et L. Nagy, Theoretical study of the simultaneous ionization and excitation of helium by fast charged projectiles, NUCL INST B, 154(1-4), 1999, pp. 295-299
Citations number
21
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
ISSN journal
0168583X
→ ACNP
Volume
154
Issue
1-4
Year of publication
1999
Pages
295 - 299
Database
ISI
SICI code
0168-583X(199906)154:1-4<295:TSOTSI>2.0.ZU;2-B
Abstract
Cross sections for the simultaneous ionization and excitation to the 2s sta
te of the helium atom by fast proton and antiproton impact have been calcul
ated. We apply the impact parameter method and use a second-order perturbat
ion approximation. Electron correlation is taken into account in the initia
l state but is neglected in the final state. The cross sections obtained fo
r protons are higher than those obtained for antiproton projectiles, in acc
ordance with the theoretical findings of Sidorovich (V.A. Sidorovich, J. Ph
ys. B 30 (1997) 2187). (C) 1999 Elsevier Science B.V. All rights reserved.