Momentum imaging spectrometer for molecular fragmentation dynamics induced by pulsed electron beam.
Momentum imaging spectrometer for molecular fragmentation dynamics induced by pulsed electron beam.
复制标题
用于脉冲电子束诱导的分子碎裂动力学的动量成像光谱仪。
DOI:
10.1063/1.4847156
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发表时间:
2013-12
影响因子:
1.6
通讯作者:
Chen, Xiangjun
中科院分区:
文献类型:
--
作者:
Wang, Enliang;Shan, Xu;Shi, Yufeng;Tang, Yaguo;Chen, Xiangjun
A momentum imaging spectrometer has been built for studying the electron impact molecular fragmentation dynamics. The setup consists of a pulsed electron gun and a time of flight system as well as a two-dimensional time and position sensitive multi-hit detector. The charged fragments with kinetic energy up to 10 eV can be detected in 4π solid angles and their three-dimensional momentum vectors can be reconstructed. The apparatus is tested by electron impact ionization of Ar and dissociative ionization of CO2. By analyzing the ion-ion coincidence spectra, the complete and incomplete Coulomb fragmentation channels for CO2(2+) and CO2(3+) are identified. The kinetic energy release (KER) and angular correlation for the two-body breakup channel CO2(2+*) → O(+) + CO(+) are reported. The peak value of total KER is found to be 6.8 eV which is consistent with the previous photoion-photoion coincidence studies, and the correlation angle of O(+) and CO(+) is also explicitly determined to be 172.5°.
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DOI:
10.1088/0953-4075/38/9/025
发表时间:
2005-04
期刊:
Journal of Physics B: Atomic, Molecular and Optical Physics
影响因子:
--
作者:
K. Ueda;J. Eland
通讯作者:
K. Ueda;J. Eland
影响因子:
4.4
作者:
Pengqian Wang;C. Vidal
通讯作者:
Pengqian Wang;C. Vidal
影响因子:
2.4
作者:
R. Singh;P. Bhatt;N. Yadav;R. Shanker
通讯作者:
R. Singh;P. Bhatt;N. Yadav;R. Shanker
影响因子:
2.9
作者:
R. Singh;P. Bhatt;N. Yadav;R. Shanker
通讯作者:
R. Singh;P. Bhatt;N. Yadav;R. Shanker
影响因子:
4.4
作者:
G. Dujardin;D. Winkoun
通讯作者:
G. Dujardin;D. Winkoun