(e, 2e) Investigations of the Simultaneous Ionization and Excitation of Helium to He+(n=2) |
| |
作者姓名: | Shi-yan Sun Xiang-fu Jia |
| |
作者单位: | Centure for research of Molecule Science, School of Physics and Information Engineering, Shanxi NormalUniversitj4, Linfen 041004, China |
| |
摘 要: | Three-Coulomb-wave method is employed to treat the process of (e, 2e) simultaneous ion- ization and excitation to the n=2 state of helium, with radial and angular correlated wave-function of He target. The triple differential cross sections are calculated and analyzed in very asymmetric coplanar geometry at incident energies of 5.50, 1.50 and 0.57 keV. Results are compared with the absolute measurements and the theoretical first and second Born approximation. The present triply differential cross section (TDCS) is found to be in good agreement with experimental data qualitatively. The distinguishing feature noted in TDCS structure is the presence of intense recoil peak that for certain parameters is even larger than the binary peak, an unusual feature for the single-ionization process at high and intermediate energies.
|
关 键 词: | 电离过程 三重微分截面 励磁 氦 能量计算 TDCS 几何形状 实验数据 |
本文献已被 维普 等数据库收录! |
|