ITP OpenIR  > 理论物理所2012年知识产出
Quantum over-barrier reflection effects manifested in photodetachment cross sections
Yang, BC; Du, ML; Yang, BC (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
2012
发表期刊JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
ISSN0953-4075
卷号45期号:17页码:175003
摘要The photodetachment of H- near a potential barrier is studied. A new formula is presented for the cross sections induced by a barrier. The new formula describes two quantum effects near the barrier tops. For energies near and above the barrier tops, the quantum over-barrier reflection effects are included and the induced oscillations in the cross sections are still prominent; for energies near and below the barrier tops, the quantum tunnelling across barriers is taken into account and consequently the oscillations are weakened. For energies far away from the barrier tops, the new formula agrees with the standard closed-orbit theory. We demonstrate that a potential barrier of various width and location can be realized by placing a negative ion near a metal surface and applying an electric field pointing to the surface. The width and location of the barrier can be systematically changed by varying the electric field strength and the distance between the negative ion and the surface. Results are also presented for estimating the sizes and locations of the aforementioned quantum effects in the cross sections.
部门归属[Yang, B. C.; Du, M. L.] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
关键词Closed Classical Orbits Static Electric-field Metal-surface Hydrogen-atom Magnetic-field Rydberg States Wave Photodetachment Spectra Ionization
学科领域Physics
资助者NSFC [11074260] ; NSFC [11074260] ; NSFC [11074260] ; NSFC [11074260]
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收录类别SCI
语种英语
资助者NSFC [11074260] ; NSFC [11074260] ; NSFC [11074260] ; NSFC [11074260]
WOS记录号WOS:000308666000003
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15028
专题理论物理所2012年知识产出
通讯作者Yang, BC (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
推荐引用方式
GB/T 7714
Yang, BC,Du, ML,Yang, BC . Quantum over-barrier reflection effects manifested in photodetachment cross sections[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,2012,45(17):175003.
APA Yang, BC,Du, ML,&Yang, BC .(2012).Quantum over-barrier reflection effects manifested in photodetachment cross sections.JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,45(17),175003.
MLA Yang, BC,et al."Quantum over-barrier reflection effects manifested in photodetachment cross sections".JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 45.17(2012):175003.
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