Quantum over-barrier reflection effects manifested in photodetachment cross sections
文献类型：期刊论文
| 作者 | Du, ML
|
| 刊名 | JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
 |
| 出版日期 | 2012 |
| 卷号 | 45期号:17页码:175003 |
| 关键词 | CLOSED CLASSICAL ORBITS STATIC ELECTRIC-FIELD METAL-SURFACE HYDROGEN-ATOM MAGNETIC-FIELD RYDBERG STATES WAVE PHOTODETACHMENT SPECTRA IONIZATION |
| ISSN号 | 0953-4075 |
| 通讯作者 | Yang, BC (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China. |
| 英文摘要 | 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. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | NSFC [11074260] |
| 原文出处 | http://dx.doi.org/10.1088/0953-4075/45/17/175003 |
| 语种 | 英语 |
| WOS记录号 | WOS:000308666000003 |
| 公开日期 | 2014-04-25 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15028]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Du, ML. 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 | Du, ML.(2012).Quantum over-barrier reflection effects manifested in photodetachment cross sections.JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,45(17),175003. |
| MLA | Du, ML."Quantum over-barrier reflection effects manifested in photodetachment cross sections".JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 45.17(2012):175003. |
入库方式： OAI收割
来源：理论物理研究所
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