The interaction between the supersonic molecular beam and electron beam for the optimization of an electron ionization ion source
The interaction between the supersonic molecular beam and electron beam for the optimization of an electron ionization ion source
复制标题
用于优化电子电离离子源的超声分子束和电子束之间的相互作用
DOI：
10.1063/1.5109448
复制
发表时间：
2019-10
影响因子：
1.6
通讯作者：
Han J.F.
中科院分区：
文献类型：
--
作者：
Liu D.;Qu G.F.;Quguofeng@scu.edu.cn;Wang Y.Z.;Zhou M.L.;Li M.;Xu Z.X.;Yang C.W.;Han J.F.
超声分子束(SMB)与电子束的相互作用是电子电离质谱仪(EI-MS with SMB)设计中的关键问题。本文设计了一种基于电子枪的EI离子源样机，其灯丝远离相互作用范围，灯丝场的影响可以忽略不计。用一台高速摄像机和一个法拉第杯研究了相互作用。研究了离子通量及其随滞止压力和轴向距离的变化规律。实验结果与关于相互作用中电离和光子发射过程的简单模拟结果是一致的。研究发现，较高的停滞压力是获得最大离子通量所需的较高电子能量。报道了EI离子源的优化参数，包括轴向位置、停滞压力和电子能量。这些结果对离子源的设计和优化具有重要意义。超声分子束与电子束的相互作用是电子电离质谱仪设计中的一个关键问题。本文设计了一种基于电子枪的EI离子源样机，其灯丝远离相互作用范围，灯丝场的影响可以忽略不计。用一台高速摄像机和一个法拉第杯研究了相互作用。研究了离子通量及其随滞止压力和轴向距离的变化规律。实验结果与关于相互作用中电离和光子发射过程的简单模拟结果是一致的。研究发现，较高的停滞压力是获得最大离子通量所需的较高电子能量。报道了EI离子源的优化参数，包括轴向位置、停滞压力和电子能量。这些结果对离子源的设计和优化具有一定的指导意义。
The interaction between the supersonic molecular beam (SMB) and electron beam is a key issue in the design of electron ionization mass spectrometry with SMB (EI-MS with SMB). In this paper, one EI ion source prototype was designed based on an electron gun, whose filament was far away from the interaction range and the influence of the filament field could be neglected. The interaction was studied by one high-speed camera and one Faraday cup. The ion flux as well as the variation with stagnation pressure and axial distance was studied. The experimental results were consistent with the simple simulated results about the ionization and photon emission process in the interaction. It was found that higher stagnation pressure was necessary for higher electron energy to acquire the maximum ion flux. The optimized parameters for the EI ion source including the axial position, stagnation pressure, and electron energy were reported. These results were meaningful for the design and optimization of the ion source.The interaction between the supersonic molecular beam (SMB) and electron beam is a key issue in the design of electron ionization mass spectrometry with SMB (EI-MS with SMB). In this paper, one EI ion source prototype was designed based on an electron gun, whose filament was far away from the interaction range and the influence of the filament field could be neglected. The interaction was studied by one high-speed camera and one Faraday cup. The ion flux as well as the variation with stagnation pressure and axial distance was studied. The experimental results were consistent with the simple simulated results about the ionization and photon emission process in the interaction. It was found that higher stagnation pressure was necessary for higher electron energy to acquire the maximum ion flux. The optimized parameters for the EI ion source including the axial position, stagnation pressure, and electron energy were reported. These results were meaningful for the design and optimization of the ion source.
登录
查看更多内容
DOI：
10.1063/1.4961572
发表时间：
2016-09
期刊：
The Review of scientific instruments
影响因子：
--
作者：
C. Y. Chen;D. L. Yu;B. Feng;L. Yao;X. Song;L. Zang;X. Gao;Q. Yang;X. Duan
通讯作者：
C. Y. Chen;D. L. Yu;B. Feng;L. Yao;X. Song;L. Zang;X. Gao;Q. Yang;X. Duan
影响因子：
0.6
作者：
A. V. Kalinin;L. Rusin;J. Toennies
通讯作者：
A. V. Kalinin;L. Rusin;J. Toennies
影响因子：
3.3
作者：
D. Lundberg;R. Kaita;R. Majeski
通讯作者：
D. Lundberg;R. Kaita;R. Majeski
影响因子：
1.6
作者：
Masubuchi, Tsugunosuke;Eckhard, Jan F.;Heiz, Ulrich
通讯作者：
Heiz, Ulrich
影响因子：
3.3
作者：
L. Yao;Nianyi Tang;Z. Cui;Deming Xu;Z. Deng;X. Ding;Junlin Luo;J. Dong;G. Guo;Shi-han Yang
通讯作者：
L. Yao;Nianyi Tang;Z. Cui;Deming Xu;Z. Deng;X. Ding;Junlin Luo;J. Dong;G. Guo;Shi-han Yang