Ag^-与He原子碰撞的单电子脱附截面的实验研究  

An experimental study on single-electron detachment cross sections of Ag^- colliding with He

作　　者：黎光武[1,2] 金正宇[1] 张雪梅[1] 吴师民[1] 贺勉鸿[1] 陆福全[1] 彭先觉[3] 杨福家[1] 

机构地区：[1]复旦大学现代物理研究所,应用离子束物理实验室,上海200433 [2]中国工程物理研究院核物理与化学研究所,四川绵阳621900 [3]中国工程物理研究院

出　　处：《强激光与粒子束》2001年第6期766-768,共3页High Power Laser and Particle Beams

基　　金：国家自然科学基金资助课题 (198740 15 )

摘　　要：对 Ag-与 He原子碰撞的单电子脱附过程进行了实验研究 ,使用增长率方法在 5～1 0 ke V能量范围内对脱附截面进行了测量 ,得到在 2 0 ke V时的典型值为 6.6× 1 0 -16cm2 。实验结果的不确定度约为 8%The system and the method of the Ag - and He collision experiment are described, and the distinguishing feature of this experiment system is that only one detector was used. The single-electron detachment cross-sections of Ag - in collision with He has been measured in the energy range of 5～30 keV by the growth-rate method. The typical value of the cross section of Ag - impacting on He at 20keV is 6.6×10 -16 cm 2. The experimental uncertainty of the results is about ±8% in this work.

关 键 词：电子脱附 银负离子 增长率方法 HE原子 氦原子 碰撞 脱附截面 

分 类 号：O562.5[理学—原子与分子物理]