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Deep Minima in the Triply Differential Cross Section for Ionization of Atomic Hydrogen by Electron and Positron Impact
| Content Provider | MDPI |
|---|---|
| Author | Demars, C. M. Ward, S. J. Colgan, J. Amami, S. Madison, D. H. |
| Copyright Year | 2020 |
| Description | We investigate ionization of atomic hydrogen by electron- and positron-impact. We apply the Coulomb–Born (CB1) approximation, various modified CB1 approximations, the three body distorted wave (3DW) approximation, and the time-dependent close-coupling (TDCC) method to electron-impact ionization of hydrogen. For electron-impact ionization of hydrogen for an incident energy of approximately 76.45 eV, we obtain a deep minimum in the CB1 triply differential cross section (TDCS). However, the TDCC for 74.45 eV and the 3DW for 74.46 eV gave a dip in the TDCS. For positron-hydrogen ionization (breakup) we apply the CB1 approximation and a modified CB1 approximation. We obtain a deep minimum in the TDCS and a zero in the CB1 transition matrix element for an incident energy of 100 eV with a gun angle of |
| Starting Page | 26 |
| e-ISSN | 22182004 |
| DOI | 10.3390/atoms8020026 |
| Journal | Atoms |
| Issue Number | 2 |
| Volume Number | 8 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-05-29 |
| Access Restriction | Open |
| Subject Keyword | Atoms Atomic, Molecular and Chemical Physics Electron-impact Ionization Hydrogen Positron-impact Ionization Velocity Field Vortices |
| Content Type | Text |
| Resource Type | Article |
