Abstract
Autoionizing (2s2) 1S, (2p2) 1D and (2s2p) 1P resonances in projectile energy loss spectra arestudied theoretically for protons scattered on atomic helium.The differential resonance yield, as a function of the scatteringangle, is the quantity of primary attention. The effects of theCoulomb interaction in the final state and the projectile-coreinteraction 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 withcalculations for differential cross sections of doubleexcitation.
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