Precollision and Postcollision Electron-Electron Correlation Effects for Intermediate-Energy Proton-Impact Ionization of Helium

M. Foster; Jerry Peacher; Michael Schulz; Ahmad Hasan; Don 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
, Jerry Peacher
, Michael Schulz
, Ahmad Hasan
, Don H. Madison

Physics

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

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	American English
Journal	Physical Review A
DOIs	https://doi.org/10.1103/PhysRevA.72.062708
State	Published - Jan 1 2005

Keywords

Atom-Ion Collisions
Electron Correlations
Helium Neutral Atoms
Hydrogen Ions
Ionisation
Positive Ions

Disciplines

Physics

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10.1103/PhysRevA.72.062708License: CC BY

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title = "Precollision and Postcollision Electron-Electron Correlation Effects for Intermediate-Energy Proton-Impact Ionization of Helium",

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.",

keywords = "Atom-Ion Collisions, Electron Correlations, Helium Neutral Atoms, Hydrogen Ions, Ionisation, Positive Ions",

author = "M. Foster and Jerry Peacher and Michael Schulz and Ahmad Hasan and Madison, \{Don H.\}",

year = "2005",

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doi = "10.1103/PhysRevA.72.062708",

language = "American English",

journal = "Physical Review A",

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TY - JOUR

T1 - Precollision and Postcollision Electron-Electron Correlation Effects for Intermediate-Energy Proton-Impact Ionization of Helium

AU - Foster, M.

AU - Peacher, Jerry

AU - Schulz, Michael

AU - Hasan, Ahmad

AU - Madison, Don H.

PY - 2005/1/1

Y1 - 2005/1/1

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.

KW - Atom-Ion Collisions

KW - Electron Correlations

KW - Helium Neutral Atoms

KW - Hydrogen Ions

KW - Ionisation

KW - Positive Ions

UR - https://scholarsmine.mst.edu/phys_facwork/378

U2 - 10.1103/PhysRevA.72.062708

DO - 10.1103/PhysRevA.72.062708

M3 - Article

SN - 2469-9934

JO - Physical Review A

JF - Physical Review A

ER -

Precollision and Postcollision Electron-Electron Correlation Effects for Intermediate-Energy Proton-Impact Ionization of Helium

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