Charge and Energy Dependences of Ionization and Transfer for Helium in Collisions with Fast Charged Projectiles  

作　　者：付宏斌 王宝红 丁宝卫 刘兆远 

机构地区：[1]School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000 [2]Department of Physics, Lanzhou University, Lanzhou 730000

出　　处：《Chinese Physics Letters》2009年第2期107-110,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 10704030, and the Natural Science Foundation of Gansu Province under Grant No 0710RJZA014.

摘　　要：The classical method within the independent electron model is employed to investigate （i） charge dependences of single and double ionization for helium by various charged ions A^q＋ （q = 1 - 8） at impact energies of 0.64 and 1.44 MeV/u, respectively, （ii） energy dependences of transfer ionization for helium by 0.5-3 MeV/u A^8.9＋ ions impact. The Lenz-Jensen model of the atom is applied instead of the Bohr model of the atom, and the impact-parameter dependences are also introduced into the calculations. Satisfactory agreement is found between theoretical and experimental data.The classical method within the independent electron model is employed to investigate （i） charge dependences of single and double ionization for helium by various charged ions A^q＋ （q = 1 - 8） at impact energies of 0.64 and 1.44 MeV/u, respectively, （ii） energy dependences of transfer ionization for helium by 0.5-3 MeV/u A^8.9＋ ions impact. The Lenz-Jensen model of the atom is applied instead of the Bohr model of the atom, and the impact-parameter dependences are also introduced into the calculations. Satisfactory agreement is found between theoretical and experimental data.

关 键 词：field emission molybdenum dioxide enhancement factor 

分 类 号：O561.5[理学—原子与分子物理] TK01[理学—物理]