L-Shell X-Ray Yields and Production Cross Sections of Zr and Mo Bombarded by Slow Highly Charged Ar^16＋ Ions  

作　　者：徐进章 杜娟 陈熙萌 邵剑雄 杨治虎 崔莹 高志民 刘玉文 

机构地区：[1]School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000 [2]Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000

出　　处：《Chinese Physics Letters》2008年第5期1649-1652,共4页中国物理快报（英文版）

基　　金：Supported by the Special Foundation for State Major Basic Research Programme of China under Grant No 2002CCA00900, the National Natural Science Foundation of China under Grant No 10374039, the Natural Science Foundation of Gansu Province （ZS031-A25-001-Z）, and the Specialized Research~Fund for the Doctoral Programme of Higher Education of China under Grant No 20030730004.

摘　　要：The L-shell x-ray yields of Zr and Mo bombarded by slow Ar16＋ ions are measured. The energy of the Ar^16＋ ions ranges from about 150 keV to 350 keV. The L-shell x-ray production cross sections of Zr and Mo are extracted from these yields data. The explanation of these experimental results is in the framework of the adiabatic direct- ionization and the binding energy modified BEA approximation. We consider, in the slow asymmetric collisions such as Ar and Mo/Zr, the transient united atoms （UA） are formed during the ion-surface interaction and the direct-ionization is the main mechanism for the inner-shell vacancy production. Generally, the theoretical results are in good agreement with the experimental data.The L-shell x-ray yields of Zr and Mo bombarded by slow Ar16＋ ions are measured. The energy of the Ar^16＋ ions ranges from about 150 keV to 350 keV. The L-shell x-ray production cross sections of Zr and Mo are extracted from these yields data. The explanation of these experimental results is in the framework of the adiabatic direct- ionization and the binding energy modified BEA approximation. We consider, in the slow asymmetric collisions such as Ar and Mo/Zr, the transient united atoms （UA） are formed during the ion-surface interaction and the direct-ionization is the main mechanism for the inner-shell vacancy production. Generally, the theoretical results are in good agreement with the experimental data.

关 键 词：IONIZATION SURFACE NEUTRALIZATION COLLISIONS PARTICLES IMPACT ATOMS 

分 类 号：O56[理学—原子与分子物理]