Fragmentation dynamics of carbonyl sulfide in collision with 500 eV electron
Fragmentation dynamics of carbonyl sulfide in collision with 500 eV electron
复制标题
羰基硫与500 eV电子碰撞的裂解动力学
DOI：
10.1063/1.4972064
复制
发表时间：
2016-12-21
影响因子：
4.4
通讯作者：
Chen, Xiangjun
中科院分区：
文献类型：
--
作者：
Shen, Zhenjie;Wang, Enliang;Chen, Xiangjun
研究了OCSq~+（q = 2，3，4）在碰撞能量为500 eV时的碎裂动力学.利用动量成像技术，得到了所有碎片的三维动量矢量，从而可以分析某一破碎通道的动能释放和动量关联。多达15个解离通道进行了分析，包括六个，五个和四个通道的两体，不完全和完整的三体库仑碎裂。对于三体解离，借助Dalitz图和Newton图研究了其碎裂机制。结果表明，OCS2 +-> O + C++ S+和OCS3 +-> O ++ C++ S+的裂解顺序分别为O-C键和C-S键先断裂。然而，其余的通道总是通过一个协调一致的机制分离。通道的相对强度也在这项工作中。由AIP出版社出版。
The fragmentation dynamics of OCSq+ (q = 2, 3, 4) induced by electron collision at an impact energy of 500 eV is studied. By using the momentum imaging technique, the three dimensional momentum vectors of all the fragments are obtained, which enables us to analyse both the kinetic energy release and the momentum correlations for a certain fragmentation channel. Up to fifteen dissociation channels are analyzed including six, five, and four channels for two-body, and incomplete and complete three-body Coulomb fragmentations. For three-body dissociation, the fragmentation mechanisms are investigated with the help of Dalitz plot and Newton diagram. It is found that the sequential fragmentation involves in OCS2+ -> O + C+ + S+ with S+ emitted first and in OCS3+ -> O+ + C+ + S+ with O-C and C-S bonds breaking first. The remaining channels, however, always dissociate through a concerted mechanism. The relative intensities of the channels are also presented in this work. Published by AIP Publishing.