Citation: Liu Jian-Bo, Han Chun-Ying, Zheng Wei-Jun, Gao Zhen, Kong Fan-Ao. Formation,Reaction and Photodessociation of Lead/Sulfur Clusters[J]. Acta Physico-Chimica Sinica, 1999, 15(01): 22-27. doi: 10.3866/PKU.WHXB19990105
铅、硫团簇的形成、反应与光解
English
Formation,Reaction and Photodessociation of Lead/Sulfur Clusters
The formation and photodissociation of Pb/S cluster ions, produced by tow different ways of laser ablation, were studied with a tandem time-of-flight mass spectrometer. By laser direct ablation on a mixed Pb+S sample, the cluster ions with the compositions of PbnSn-1+ or PbnSn- were the most abundant species and can be identified as the stable components of Pb/S cluster ions. By laser double ablation on separated Pb sample and S sample, the products were PbnSm+(n=1-3, m=0-9) and PbnSm-(n=1-7, m=0-9) formed through reactions between Pb clusters and S clusters. Form the distributions of cluster compositions and the photodissociation of clusters, we can confirm two different formation mechanisms of Pb/S clusters according to the producing ways of clusters.
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