| タイトル | Collisional redistribution of radiation. I - The density matrix |
| 著者（英） | Cooper, J.; Burnett, K.; Smith, E. W.; Ballagh, R. J. |
| 著者所属（英） | Joint Inst. for Lab. Astrophysics|Colorado Univ. |
| 発行日 | 1980-11-01 |
| 言語 | eng |
| 内容記述 | As a first step in deriving accurate, calculable expressions for collisional redistribution of radiation, valid outside the impact regime a method for calculating an accurate binary-collision density operator for an atom in the presence of a driving field and perturbers is presented. Projection-operator techniques to establish first the precise validity of the Markoff approximation for radiative relaxation are used. Using the same techniques, it is shown how the collisional-relaxation problem may be analyzed in a practical manner outside the Markoff approximation. The effect of correlations between radiative and collisional events is included in a consistent way and the physical implications of these correlation effects are demonstrated for a simple example, the two-level atom with nondegenerate levels. |
| NASA分類 | NUCLEAR AND HIGH-ENERGY PHYSICS |
| レポートNO | 81A11761 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/419031 |
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