CJCU

Chem. J. Chinese Universities ›› 1994, Vol. 15 ›› Issue (10): 1529.

• Articles • Previous Articles     Next Articles

Dissociation Excitation of CHnCl4-n(n=1-4)by the Energy Transfer of He(23 s)Under a Beam-Gas Condition

LI Quan-Xin1, LAI Re1, CHEN Cong-Xiang1, MA Xiang-Xiao1, LI Xue-Chu2, SHEN Guan-Lin2   

  1. 1. Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026;
    2. State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of C'kemical Pkysics. Chinese Academy of Sciences. Dalian, 116023
  • Received:1993-11-26 Revised:1994-06-05 Online:1994-10-24 Published:1994-10-24

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Abstract: The kinetic processes of dissociation excitation of CHnCl4-n(n=1-4)colliding with He(23s)were studied by observing the emissions of products。The formation rate constants of CH(A), CH(B), CH(C), Hand CCI(A)from He(23s)/CHnCl4-n(n=1-4)reaction were determined by using the reference reaction method.The rovibrational distribution of CH(A2Δ, v′=0-2)and CH(B2Σ, v′=0)was also obtained by a computer simulation of CH(A-X, B-X)emission. The experimental results showed that the rotational distribution of CH(A2Δ, v′=0)from He(23s)and CHnCl4-n(n=1-3)was expressed as the double Boltzmann temperature, which is different from that of He(23s)/CH4.It is also noted that the major available energies of the reactions are deposited into relative translational energy of products.The mechanism of the reactions He(23s)with CHnCl4-nhas been suggested.

Key words: Dissociation excitation, Formation rate constant, Rovibrational distribution

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