| タイトル | Optical potential approach to the electron-atom impact ionization threshold problem |
| 本文（外部サイト） | http://hdl.handle.net/2060/19730018882 |
| 著者（英） | Hahn, Y.; Temkin, A. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 1973-07-01 |
| 言語 | eng |
| 内容記述 | The problem of the threshold law for electron-atom impact ionization is reconsidered as an extrapolation of inelastic cross sections through the ionization threshold. The cross sections are evaluated from a distorted wave matrix element, the final state of which describes the scattering from the Nth excited state of the target atom. The actual calculation is carried for the e-H system, and a model is introduced which is shown to preserve the essential properties of the problem while at the same time reducing the dimensionability of the Schrodinger equation. Nevertheless, the scattering equation is still very complex. It is dominated by the optical potential which is expanded in terms of eigen-spectrum of QHQ. It is shown by actual calculation that the lower eigenvalues of this spectrum descend below the relevant inelastic thresholds; it follows rigorously that the optical potential contains repulsive terms. Analytical solutions of the final state wave function are obtained with several approximations of the optical potential. |
| NASA分類 | PHYSICS, ATOMIC, MOLECULAR, AND NUCLEAR |
| レポートNO | 73N27609
NASA-TM-X-66282
X-641-73-195 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/198496 |
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