Electron-impact multiple ionization of Ne, Ar, Kr and Xe

Electron-impact multiple ionization of Ne, Ar, Kr and Xe
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Ne、Ar、Kr 和 Xe 的电子轰击多重电离

DOI:
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
J. Miraglia
J. Miraglia
中科院分区:
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文献类型:
--
作者:
C. C. Montanari;J. Miraglia

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本文描述了稀有气体电子碰撞的多重电离截面。我们特别注意的高能量区域(0.1-10千电子伏)的直接电离是一个较小的贡献和碰撞后的电子发射占主导地位的最终目标电荷状态。我们在这里报告的电子碰撞单到六重电离截面和总电离截面,包括直接和碰撞后的过程,即使在总值。我们使用的连续扭曲波和第一玻恩近似适合于描述光粒子的碰撞,即能量,质量和轨迹的修正纳入,后者通过考虑电子靶势和使用阿贝尔变换。俄歇型碰撞后的贡献包括在多项式展开通过实验的分支比后,单电离事件。这些实验的分支比的所有轨道的四个目标的表格包括在内。目前的结果进行了比较与大量的电子碰撞实验数据。我们已经得到了一个很好的描述,在高能量的多重电离测量,碰撞后电离占主导地位。在中能区,我们的理论结果显示了正确的趋势,电子碰撞电离截面远低于质子碰撞电离截面。
This work describes the multiple ionization cross sections of rare gases by electron-impact. We pay special attention to the high energy region (0.1–10 keV) where the direct ionization is a minor contribution and the post-collisional electron emission dominates the final target charge state. We report here electron-impact single to sextuple ionization cross sections and total ionization cross sections including direct and post-collisional processes, even in the total values. We use the continuum distorted wave and the first Born approximations adapted to describe light-particle impact, i.e. energy, mass and trajectory corrections are incorporated, the latter by considering the electron-target potential and by using the Abel transformation. Auger-type post-collisional contributions are included in the multinomial expansion through experimental branching ratios after single ionization events. Tabulations of these experimental branching ratios for all the orbitals of the four targets are included. Present results are compared with the large amount of electron-impact experimental data available. We have obtained a good description of the multiple-ionization measurements at high energies, where the post-collisional ionization dominates. At intermediate energies, our theoretical results show the correct tendency, with the electron-impact ionization cross sections being far below the proton-impact ones.
DOI: 10.1103/physreva.88.042707
发表时间: 2013-10
期刊: Physical Review A
影响因子: 2.9
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DOI: 10.1088/0953-4075/46/21/215202
发表时间: 2013
期刊: Journal of Physics B: Atomic, Molecular and Optical Physics
影响因子: --
作者:
M. S. Pindzola;S. D. Loch;A. Borovik;M. F Gharaibeh;J. K. Rudolph;S. Schippers;A. Müller
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发表时间: 2003-05-23
影响因子: 8.6
作者:
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通讯作者: Möller, T