Precollision and postcollision electron-electron correlation effects for intermediate-energy proton-impact ionization of helium

M. Foster; J. L. Peacher; M. Schulz; A. Hasan; D. H. Madison

doi:10.1103/PhysRevA.72.062708

Precollision and postcollision electron-electron correlation effects for intermediate-energy proton-impact ionization of helium

M. Foster, J. L. Peacher, M. Schulz, A. Hasan, D. H. Madison

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

We report fully differential cross sections (FDCS) for the single ionization of helium by a 75 keV incident energy proton. Previous three-body distorted wave (3DW) calculations for this collision system are in poor agreement with the absolute magnitude of the experimental measurements. The 3DW approximation treats the four-body problem as an effective three-body problem in which the passive electron does not participate in the collision. We have developed a full four-body approach in which the passive electron fully participates in the collision. It will be shown that the FDCS is very sensitive to the treatment of the passive electron-ejected electron interaction. Results of our full four-body approach will be compared with recent absolute experimental measurements.

Original language	English
Article number	062708
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	72
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevA.72.062708
Publication status	Published - Dec 2005
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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abstract = "We report fully differential cross sections (FDCS) for the single ionization of helium by a 75 keV incident energy proton. Previous three-body distorted wave (3DW) calculations for this collision system are in poor agreement with the absolute magnitude of the experimental measurements. The 3DW approximation treats the four-body problem as an effective three-body problem in which the passive electron does not participate in the collision. We have developed a full four-body approach in which the passive electron fully participates in the collision. It will be shown that the FDCS is very sensitive to the treatment of the passive electron-ejected electron interaction. Results of our full four-body approach will be compared with recent absolute experimental measurements.",

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AU - Foster, M.

AU - Peacher, J. L.

AU - Schulz, M.

AU - Hasan, A.

AU - Madison, D. H.

PY - 2005/12

Y1 - 2005/12

N2 - We report fully differential cross sections (FDCS) for the single ionization of helium by a 75 keV incident energy proton. Previous three-body distorted wave (3DW) calculations for this collision system are in poor agreement with the absolute magnitude of the experimental measurements. The 3DW approximation treats the four-body problem as an effective three-body problem in which the passive electron does not participate in the collision. We have developed a full four-body approach in which the passive electron fully participates in the collision. It will be shown that the FDCS is very sensitive to the treatment of the passive electron-ejected electron interaction. Results of our full four-body approach will be compared with recent absolute experimental measurements.

AB - We report fully differential cross sections (FDCS) for the single ionization of helium by a 75 keV incident energy proton. Previous three-body distorted wave (3DW) calculations for this collision system are in poor agreement with the absolute magnitude of the experimental measurements. The 3DW approximation treats the four-body problem as an effective three-body problem in which the passive electron does not participate in the collision. We have developed a full four-body approach in which the passive electron fully participates in the collision. It will be shown that the FDCS is very sensitive to the treatment of the passive electron-ejected electron interaction. Results of our full four-body approach will be compared with recent absolute experimental measurements.

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Precollision and postcollision electron-electron correlation effects for intermediate-energy proton-impact ionization of helium

Abstract

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