A New Representation of the 3C Model in the Quasi-Sturmian Approach to Ionization of Helium by Proton Impact
Open Access
- 8 June 2026
- conference paper
- Published by MDPI AG in Physical Sciences Forum
- Vol. 13 (1) , 10
Abstract
We investigate the 75 keV proton impact ionization of helium. The convoluted quasi-Sturmian approach is extended to treat both the direct ionization and the electron capture to the continuum by proposing an ansatz for the Coulomb three-body Green’s function operator, for the kernel of which the leading asymptotic form contains the wave function of the 3C model. The resulting 3C-like model is tested numerically. Fully differential cross-sections are calculated for different energy-loss regimes and compared with recent experimental data.Keywords
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