| Evidence of potential change in nonsequential double ionization |
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| 作者姓名： | 贾昌春 张朴 文华 陈长进 |
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| 作者单位： | School of Physics and Material Science;Department of Physics |
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| 基金项目： | Project supported by the National Natural Science Foundation of China(Grant No.11274219);the Science and Technology Planning Project of Guangdong Province of China(Grant No.180917124960522);the Program for Promotion of Science at Universities in Guangdong Province of China(Grant No.2018KTSCX062)。 |
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| 摘 要： | Recently,the quantitative rescattering model(QRS)for nonsequential double ionization(NSDI)is modified by taking into account the potential change(PC)due to the presence of electric field at the time of recollision.Using the improved QRS model,we simulate the longitudinal momentum distributions of doubly charged ions He2+by projecting the correlated two-electron momentum distributions for NSDI of He onto the main diagonal.The obtained results are compared directly with the experimental data at different intensities.It is found that when the PC is considered,the width of momentum distributions reduces and the agreement between theory and experiment is improved.
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| 关 键 词： | nonsequential double ionization quantitative rescattering model potential change momentum distribution of doubly charged ion |
Evidence of potential change in nonsequential double ionization |
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| Changchun Jia,Pu Zhang,Hua Wen,Zhangjin Chen.Evidence of potential change in nonsequential double ionization[J].Chinese Physics B,2021(2). |
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| Authors: | Changchun Jia Pu Zhang Hua Wen Zhangjin Chen |
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| Affiliation: | (School of Physics and Material Science,Anhui University,Hefei 230039,China;Department of Physics,College of Science,Shantou University,Shantou 515063,China) |
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| Abstract: | Recently, the quantitative rescattering model(QRS) for nonsequential double ionization(NSDI) is modified by taking into account the potential change(PC) due to the presence of electric field at the time of recollision. Using the improved QRS model, we simulate the longitudinal momentum distributions of doubly charged ions He2+by projecting the correlated two-electron momentum distributions for NSDI of He onto the main diagonal. The obtained results are compared directly with the experimental data at different intensities. It is found that when the PC is considered, the width of momentum distributions reduces and the agreement between theory and experiment is improved. |
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