Acta Phys. -Chim. Sin. ›› 1991, Vol. 7 ›› Issue (02): 211-214.doi: 10.3866/PKU.WHXB19910216

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Study on the Structure Defect of Electrodeposited Tin Using Positron Annihilation Lifetime Spectroscopy

Guo Jing-Zhong; Gu Yue-Shu; Liu Chuan-Pu; Li Bao-Zhong; Yin Yong-Jia; Cai Ji-Ye; Cao De-Zhao   

  1. Chemistry Department, Xiamen University, Xiamen 361005; Physics Department, Xiamen University
  • Received:1989-09-04 Revised:1990-04-10 Published:1991-04-15
  • Contact: Gu Yue-Shu

Abstract: The excited fragments CH(A), CH(B), CH(C) etc. were produced by the bombardment of He(2~3S) with CH_nX_(4-n)(X=Cl, Br, I). Based on the CH(A-X) emission spectra, the rotational populations can be interpretated in terms of Boltzmann distribution. The effective rotational temperature for CH(A,v'=0) produced from various methyl halides are nearly the some. Experiments under various pressure and calculation of collisional dynamics showed that the distributions are approximate to the nascent distributions.

Key words: He, Methyl halides, Rotational distribution