| タイトル | Mean excitation energies for stopping powers in various materials composed of elements hydrogen through argon |
| 著者（英） | Xu, Y. J.; Chang, C. K.; Wilson, J. W.; Kamaratos, E. |
| 著者所属（英） | NASA Langley Research Center|Academia Sinica|Christopher Newport Coll.|Old Dominion Univ. |
| 発行日 | 1984-07-01 |
| 言語 | eng |
| 内容記述 | The local plasma model is used to study the effects of the chemical and physical state of a medium on its stopping power. The relationship between that model and a more exact quantum treatment of bound systems is elucidated by examining related quantities in both theories for the case of one and two-electron systems. Atomic mean excitation energies and straggling parameters in the local plasma model are compared with the accurate calculations of Inokuti et al. (1975, 1978, 1981). The use of the Gordon-Kim electron gas model of molecular bonding is used to determine the effects of covalent chemical bond shifts on the mean excitation energies for elements of the first two rows. Calculations of mean excitation energies of ionic bonded substances are presented, and the mean excitation energies of metals are discussed. |
| NASA分類 | ATOMIC AND MOLECULAR PHYSICS |
| レポートNO | 84A38932 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/397539 |
