Title

Differential Cross Sections for Double Excitation of the Autoionizing States of Helium by 100-150 KeV Proton Impact

Abstract

Autoionizing (2s 2) 1S, (2p 2) 1D and (2s2p) 1P resonances in projectile energy loss spectra are studied theoretically for protons scattered on atomic helium. The differential resonance yield, as a function of the scattering angle, is the quantity of primary attention. The effects of the Coulomb interaction in the final state and the projectile-core interaction on the differential resonance yield are studied. Comparison with the experimental data of Schulz et al (1995) (Schulz M, Htwe W T, Gauss A D, Peacher J L and Vajnai T 1995 Phys. Rev. A 51 2140-50) is presented. Comparison is also made with calculations for differential cross sections of double excitation.

Department(s)

Physics

Keywords and Phrases

Ionization; Protons; Resonance; Scattering; Autoionizing resonances; Helium

International Standard Serial Number (ISSN)

0953-4075

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2002 Institute of Physics - IOP Publishing, All rights reserved.

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