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A theoretical imaging method for the photodetachment of H- near a reflecting surface
Afaq, A.; Du, M. L.; Afaq, A , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
2007
发表期刊JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
ISSN0953-4075
卷号40期号:6页码:1309-1321
摘要Total photodetachment cross section of H- near a reflecting wall was studied recently by Yang et al using closed-orbit theory (2006 J. Phys. B: At. Mol. Opt. Phys. 39 1855). The main effect of a reflecting wall was shown to induce an oscillation in the cross section. In this paper, we study the photodetachment of H- near a reflecting wall using a theoretical imaging method, which is very different from the method of closed-orbit theory. The theoretical imaging method enables us to derive the total and differential photodetachment cross sections in a straightforward way. We considered both a soft wall case and a hard wall case, they differ by the values of phase loss when reflecting the detached-electron waves. The result of Yang et al for the total photodetachment cross section is the asymptotic limit of our formula for the soft wall case. We also calculated the detached-electron flux distributions on a screen placed at a large distance from the negative ion. The distributions display strong interference patterns. Such interference patterns are similar to those in the photodetachment microscopy experiments.
部门归属Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Closed Classical Orbits Magnetic-fields Electric-field Quantum Spectra Cross-section Near-threshold Parallel Ionization Atoms Microscope
学科领域Physics
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收录类别SCI
WOS记录号WOS:000246001800023
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被引频次:55[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5770
专题理论物理所SCI论文
通讯作者Afaq, A , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
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Afaq, A.,Du, M. L.,Afaq, A , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China. A theoretical imaging method for the photodetachment of H- near a reflecting surface[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,2007,40(6):1309-1321.
APA Afaq, A.,Du, M. L.,&Afaq, A , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.(2007).A theoretical imaging method for the photodetachment of H- near a reflecting surface.JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,40(6),1309-1321.
MLA Afaq, A.,et al."A theoretical imaging method for the photodetachment of H- near a reflecting surface".JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 40.6(2007):1309-1321.
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