Acta Phys. -Chim. Sin. ›› 1994, Vol. 10 ›› Issue (01): 44-49.doi: 10.3866/PKU.WHXB19940111

• ARTICLE • Previous Articles     Next Articles

A Primary Study of the Formation and Photolysis of Tantalum Sulfide Cluster Ions

Zhang Nan, Yu Zhong-De, Wu Xiao-Jun, Gao Zhen, Zhu Qi-He, Kong Fan-Ao   

  1. Laboratory of Molecualr Reaction Dynamics Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080
  • Received:1992-06-29 Revised:1992-11-25 Published:1994-01-15
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Abstract:

Tantalum sulfide cluster ions (Ta_nS_m~+, n≤9, m≤30) were produced by direct laser ablation of a mixture of tantalum and sulfur powders and studied by a tandem timeof-flight mass spectrometer. It was found that the most stable tantalum sulfide cluster ions were Ta_mS_(2n+7)~+, (n=1-9). The main dissociation channel of the UV-photolysis (248 nm) of tantalum sulfide cluster ions is sequent S_2 loss. For cluster ions with n≥3, besides the S_2 loss channel, the photolysis yields Ta_3S_4~+, or Ta_4S_6~+, as nucleus was suggested for large tantalum sulfide cluster ions.

Key words: Tantalum sulfide cluster ions, UV-photolysis, Tandem time-of-flight mass spectrometer