首页 > 论文 > 激光与光电子学进展 > 55卷 > 9期(pp:90201--1)

长程库仑势在原子阈上电离能谱中的影响

Effects of Long-Range Coulomb Potential in Above-Threshold Ionization Energy Spectra of Atoms

  • 摘要
  • 论文信息
  • 参考文献
  • 被引情况
  • PDF全文
分享:

摘要

利用改进的强场近似方法分析了长程势以及短程势在阈上电离能谱中的贡献, 确定了能谱中低能结构的起因。同时, 为了确定在计算电子与分子离子散射截面时用纯分子代替分子离子是否合理, 计算了不同入射电子能量条件下, 电子和原子离子弹性散射的微分散射截面。理论计算和实验结果表明在入射电子能量较大时, 长程势在激光诱导的电子离子大角度背向散射时的影响可以忽略, 证明了在大角度散射时, 用纯分子来代替分子离子是合理的。

Abstract

Using the improved strong field approximation method, the effects of long-range potential and short-range potential in above-threshold ionization energy spectra are investigated and the origin of the low-energy structure is also found. Meanwhile, in order to prove whether it is reasonable to use pure molecules instead of molecular ions in calculating the differential cross sections (DCS) of electrons and molecular ions, the DCS of electrons and atomic ions are calculated in some different incident electron energies conditions. The results of theoretical calculation and experiments show that the effect of long-range potential can be neglected and using pure molecules instead of molecular ions is reasonable with large-angle scattering in the large incident electron energies condition.

Newport宣传-MKS新实验室计划
补充资料

中图分类号:O436

DOI:10.3788/lop55.090201

所属栏目:原子与分子物理学

基金项目:国家自然科学基金(11565018)、甘肃省教育厅科研项目(2015B-109)、陇东学院青年科技创新项目(XYZK1706)

收稿日期:2018-03-29

修改稿日期:2018-04-03

网络出版日期:2018-04-17

作者单位    点击查看

郭志坚:陇东学院电气工程学院, 甘肃 庆阳 745000

联系人作者:郭志坚(853187893@qq.com)

【1】Shen Y L, Zhou S Q, Chen H W, et al. Output characteristics of Q-switched mid-infrared fiber laser with a mechanical chopper[J]. Acta Optica Sinica, 2016, 36(1): 0114002.
沈炎龙, 周松青, 谌鸿伟, 等. 中红外2.8 μm光纤激光器机械调Q工作特性[J]. 光学学报, 2016, 36(1): 0114002.

【2】Zheng Y, Yang Y F, Zhao X, et al. Research progress on spectral beam combining technology of high-power fiber lasers[J]. Chinese Journal of Lasers, 2017, 44(2): 0201002.
郑也, 杨依枫, 赵翔, 等. 高功率光纤激光光谱合成技术的研究进展[J]. 中国激光, 2017, 44(2): 0201002.

【3】Liu J, Tan F Z, Liu C, et al. Progress on high-power ultrashort-pulsed thulium-doped fiber lasers[J]. Chinese Journal of Lasers, 2017, 44(2): 0201003.
刘江, 谭方舟, 刘晨, 等. 高功率超短脉冲掺铥光纤激光器的研究进展[J]. 中国激光, 2017, 44(2): 0201003.

【4】Gopal R, Simeonidis K, Moshammer R, et al. Three-dimensional momentum imaging of electron wave packet interference in few-cycle laser pulses[J]. Physical Review Letters, 2009, 103(5): 053001.

【5】Blaga C I, Catoire F, Colosimo P, et al. Strong-field photoionization revisited[J]. Nature Physics, 2009, 5: 335-338.

【6】Quan W, Lin Z, Wu M, et al. Classical aspects in above-threshold ionization with a midinfrared strong laser field[J]. Physical Review Letters, 2009, 103(9): 093001.

【7】Guo L, Han S S, Liu X, et al. Scaling of the low-energy structure in above-threshold ionization in the tunneling regime: theory and experiment[J]. Physical Review Letters, 2013, 110(1): 013001.

【8】Kstner A, Saalmann U, Rost J M. Electron-energy bunching in laser-driven soft recollisions[J]. Physical Review Letters, 2012, 108(3): 033201.

【9】Lin C D,Le A T, Chen Z J, et al. Strong-field rescattering physics-self-imaging of a molecule by its own electrons[J]. Journal of Physics B: Atomic, Molecular and Optical Physics, 2010, 43(12): 122001.

【10】Morishita T, Le A T, Chen Z J, et al. Accurate retrieval of structural information from laser-induced photoelectron and high-order harmonic spectra by few-cycle laser pulses[J]. Physical Review Letters, 2008, 100(1): 013903.

【11】Xu J, Zhou H L, Chen Z J, et al. Genetic-algorithm implementation of atomic potential reconstruction from differential electron scattering cross sections[J]. Physical Review A, 2009, 79(5): 052508.

【12】Blaga C I, Xu J L, DiChiara A D, et al. Imaging ultrafast molecular dynamics with laser-induced electron diffraction[J]. Nature, 2012, 483(7388): 194-197.

【13】Chen Z J, Morishita T, Le A T, et al. Analysis of two-dimensional photoelectron momentum spectra and the effect of the long-range Coulomb potential in single ionization of atoms by intense lasers[J]. Physical Review A, 2006, 74(5): 053405.

【14】Chen Z J, Le A T, Morishita T, et al. Quantitative rescattering theory for laser-induced high-energy plateau photoelectron spectra[J]. Physical Review A, 2009, 79(3): 033409.

【15】Guo Z J, Chen Z J, Zhou X X. Origin of diffraction fringes in two-dimensional photoelectron momentum distributions for single ionization of atoms in few-cycle intense laser pulses[J]. Chinese Physics B, 2014, 23(4): 043201.

【16】Zhang J T, Nakajima T. Coulomb effects in photoionization of H atoms irradiated by intense laser fields[J]. Physical Review A, 2007, 75(4): 043403.

【17】Morishita T, Chen Z J, Watanabe S, et al. Two-dimensional electron momentum spectra of argon ionized by short intense lasers: comparison of theory with experiment[J]. Physical Review A, 2007, 75(2): 023407.

【18】DuBois R D, Rudd M E. Differential cross sections for elastic scattering of electrons from argon, neon, nitrogen and carbon monoxide[J]. Journal of Physics B: Atomic and Molecular Physics, 1976, 9(15): 2657-2667.

【19】Srivastava S K, Tanaka H, Chutjian A, et al. Elastic scattering of intermediate-energy electrons by Ar and Kr[J]. Physical Review A, 1981, 23(5): 2156-2166.

【20】Vuskovic L, Kurepa M V. Differential cross sections of 60-150 eV electrons elastically scattered in argon[J]. Journal of Physics B: Atomic and Molecular Physics, 1976, 9(5): 837-842.

引用该论文

Guo Zhijian. Effects of Long-Range Coulomb Potential in Above-Threshold Ionization Energy Spectra of Atoms[J]. Laser & Optoelectronics Progress, 2018, 55(9): 090201

郭志坚. 长程库仑势在原子阈上电离能谱中的影响[J]. 激光与光电子学进展, 2018, 55(9): 090201

您的浏览器不支持PDF插件,请使用最新的(Chrome/Fire Fox等)浏览器.或者您还可以点击此处下载该论文PDF