Portal de Periódicos da CAPES

Calculation of the electron-impact-ionization cross section of helium including electron correlations

1990; American Physical Society; Volume: 41; Issue: 7 Linguagem: Inglês

10.1103/physreva.41.3624

1538-4446

Cheng Pan, Hugh P. Kelly,

Particle accelerators and beam dynamics

The total cross section and the single-differential cross section in energy for the ionization of the ground-state helium atom by electron impact have been calculated in distorted-wave approximations. The optical potential, or self-energy of the single-particle Green's function, was used to investigate effects of electron correlations in the initial state. Our results are compared with the results of experiments and other calculations.