溴乙烷的同步辐射光电离解离  

PHOTOIONIZATION AND PHOTODISSOCIATION OF BROMOETHANE USING SYNCHROTRON RADIATION

作　　者：周卫东[1] 武国华[1] 齐飞 盛六四 高辉 刘付佚 张允武 

机构地区：[1]中国科学技术大学国家同步辐射实验室

出　　处：《原子与分子物理学报》1999年第2期157-161,共5页Journal of Atomic and Molecular Physics

摘　　要：在超声射流条件下，利用真空紫外同步辐射光辐照和飞行时间质谱，研究溴乙烷光电离及解离电离的动力学。通过测量光电离及解离电离产生的碎片离子的光电离效率（ＰＩＥ）曲线，获得了溴乙烷的电离势和各碎片离子的出现势，并结合标准的已确认的热力学数据，计算了离子的标准生成焓，估算了有关分子的键能及母体离子的解离能，并对溴乙烷分子真空紫外光解离电离通道进行了分析。The kinetics processes of the photoionization and photodissociation of bromoethane have been studied by using synchrotron radiation. The photoionization efficiency (PIE) curves of the fragmental ions are measured, Based on these curves, the ion potential of C 2H 5Br and the appearance potential of some fragmental ions are obtatined. The enthalpy formation of ions, the bond energy of molecule or the related molecule ions have been eveluated. The most possible channel of the dissociation photoionization have been analyzed.

关 键 词：溴乙烷 同步辐射 光电离 解离 动力学 

分 类 号：O561.4[理学—原子与分子物理]