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题名: A theoretical imaging method for the photodetachment of H- near a reflecting surface
作者: Afaq, A. ;  Du, M. L.
刊名: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
出版日期: 2007
卷号: 40, 期号:6, 页码:1309-1321
关键词: CLOSED CLASSICAL ORBITS ;  MAGNETIC-FIELDS ;  ELECTRIC-FIELD ;  QUANTUM SPECTRA ;  CROSS-SECTION ;  NEAR-THRESHOLD ;  PARALLEL ;  IONIZATION ;  ATOMS ;  MICROSCOPE
学科分类: Physics
通讯作者: Afaq, A , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
部门归属: Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: 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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000246001800023
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内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5770
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Afaq, A.,Du, M. L.. 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.
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