外文题目: Dissociative ionization of CH2Br2 in 800 and 400 nm femtosecond laser fields
作者: Zhang, Jian; Yang, Yan; Li, Zhipeng; Sun, Zhenrong
刊名: Chem. Phys. Lett.
年: 2017 卷: 685 页： 151--156
英文关键词:

DOWN ABSORPTION-SPECTROSCOPY; ORDER HARMONIC-GENERATION; ELIMINATION; PULSES; PHOTODISSOCIATION; PHOTOLYSIS; BR-2
英文摘要:
We experimentally demonstrate the dissociative ionization of CH2Br2 molecules irritated by 800 and 400 nm femtosecond laser fields using time-of-flight mass spectra and dc-sliced ion imaging technology. Our results show that in both laser fields, CH2Br2 can ionize to CH2Br2+, then CH2Br2+ break one C-Br bond to produce fragments CH2Br(+) and Br(+). The charge assignment is determined by the ionization energy of the fragments. Additionally, in 400 nm laser fields, the CH2Br2+ can overpass a transition state to form an intermediate CH2Br-Br+, then the intermediate break C-Br bond to produce Br-2 or Br-2(+) via elimination channel.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1016/j.cplett.2017.07.049


全文传递服务