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Photodetachment of negative ion in a gradient electric field near a metal surface
  • ISSN号：1674-1056
  • 期刊名称：《中国物理B：英文版》
  • 时间：0
  • 分类：O441.4[理学—电磁学;理学—物理] O511.2[理学—低温物理;理学—物理]
  • 作者机构：[1]School of Physics, Ludong' University, Yantai 264025, China
  • 相关基金：Project supported by the National Natural Science Foundation of China （Grant Nos. 11074104 and 10604045）, the Higher Education Science and Technology Program of Shandong Province, China （Grant No. J09LA02）, and the University Student＇s Science and Technology Innovation Fund of Ludong University, China （Grant No. 10g003）.
作者： 刘天启[1], 王德华[1], 韩才[1], 刘江[1], 梁东起[1], 解思成[1]
关键词： 光剥离截面, 电场梯度, 金属表面, 负离子, 闭合轨道理论, 光致分离, 振荡, 振幅和, photodetachment, metal surface, gradient electric field, closed orbit theory
中文摘要：

Based on closed-orbit theory, the photodetachment of H in a gradient electric field near a metal surface is studied. It is demonstrated that the gradient electric field has a significant influence on the photodetachment of negative ions near a metal surface. With the increase of the gradient of the electric field, the oscillation in the photodetachment cross section becomes strengthened. Besides, in contrast to the photodetachment of H near a metal surface in a uniform electric field, the oscillating amplitude and the oscillating region in the cross section of a gradient electric field also become enlarged. Therefore, we can use the gradient electric field to control the photodetachment of negative ions near a metal surface. We hope that our results will be useful for understanding the photodetachment of negative ions in the vicinity of surfaces, cavities, and ion traps.

英文摘要：

Based on closed-orbit theory, the photodetachment of H- in a gradient electric field near a metal surface is studied. It is demonstrated that the gradient electric field has a significant influence on the photodetachment of negative ions near a metal surface. With the increase of the gradient of the electric field, the oscillation in the photodetachment cross section becomes strengthened. Besides, in contrast to the photodetachment of H- near a metal surface in a uniform electric field, the oscillating amplitude and the oscillating region in the cross section of a gradient electric field also become enlarged. Therefore, we can use the gradient electric field to control the photodetachment of negative ions near a metal surface. We hope that our results will be useful for understanding the photodetachment of negative ions in the vicinity of surfaces, cavities, and ion traps.

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期刊信息
  • 《中国物理B：英文版》
  • 中国科技核心期刊
  • 主管单位:中国科学院
  • 主办单位:中国物理学会和中国科学院物理研究所
  • 主编：欧阳钟灿
  • 地址：北京 中关村 中国科学院物理研究所内
  • 邮编：100080
  • 邮箱：
  • 电话：010-82649026 82649519
  • 国际标准刊号：ISSN：1674-1056
  • 国内统一刊号：ISSN：11-5639/O4
  • 邮发代号:
  • 获奖情况:
  • 国内外数据库收录:
  • 被引量:406