Acta Phys. -Chim. Sin. ›› 1996, Vol. 12 ›› Issue (02): 136-140.doi: 10.3866/PKU.WHXB19960209

• ARTICLE • Previous Articles     Next Articles

Kinetic Studies of CH2Cl2 Photoionization Using Synchrotron Radiation

Li Quan-Xin,Ran Qin,Sheng Liu-Si,Chen Cong-Xiang,Gao Hui,Yu Shu-Qin,Zhang Yun-Wu,Ma Xing-Xiao   

  1. Department of Chemical Physics,University of Science and Technology of China,National Synchrotron Radiation Laboratory,University of Science and Technology of China,Hefei 230026
  • Received:1995-05-15 Revised:1995-08-28 Published:1996-02-15
  • Contact: Ma Xing-Xiao


The kinetic processes of the photoionization and dissociation ionization of CH2Cl2 have been investigated under supersonic beam conditions using synchrotron radiation. The ionization energy of CH2Cl2 is 11.32l±0.01eV. Based on the measured appearance potentials (AP) of the daughter ions, the formation enthalpies (FE) of the ionic species, the bond dissociation energies (BE) and the dissociation energies (DE) of the parent ion have been estimated. The most possible channels of the VUV photodissociative ionization have been analyzed.

Key words: Photoionization, Dissociation ionization, Appearance potential