物理化学学报 >> 1999, Vol. 15 >> Issue (10): 948-951.doi: 10.3866/PKU.WHXB19991016

研究简报 上一篇    下一篇

溴乙烷光电离解离的理论计算和实验

周卫东, 盛六四, 武国华, 高辉, 齐飞, 张允武   

  1. 中国科学技术大学国家同步辐射实验室,合肥 230026
  • 收稿日期:1998-11-25 修回日期:1999-03-15 发布日期:1999-10-15
  • 通讯作者: 张允武

Experimental and Theoretical Study of Photoionization and Photodissociation of Bromoethane

Zhou Wei-Dong, Sheng Liu-Si, Wu Guo-Hua, Gao Hui, Qi-Fei, Zhang Yun-Wu   

  1. National Synchrotron Radiation Laboratory,University of Science Technology of China,Hefei 230026
  • Received:1998-11-25 Revised:1999-03-15 Published:1999-10-15
  • Contact: Zhang Yun-Wu

关键词: 溴乙烷, 同步辐射光电离, G2MP2

Abstract:

The photoionization and photodissociation of bromoethane have been studied by using synchrotron radiation. The photoionization efficiency (PIE) curves of some fragments ions are measured. Based on these curves, the ionization potential of C2H5Br is determined to be 10.29eV,and the appearance potentials of C2H5 + ,CH2Br +are measured to be 10.60eV, 13.2eV respectively. We also have performed G2MP2 calculation on these fragments. According to experimental result and G2MP2 energy, the enthalpy of formation of ions C 2H 5 +,CH 2Br +,C 2H 5Br +,the bond energy of D 0(C 2H 5 +-Br),D 0(-Br),D 0(CH 2Br +-CH 3) have been evaluated. The most possible channels of the dissociation photoionization have been analyzed.

Key words: Photoionization, Bromoethane, Synchrotron Rdiation, G2MP2