Photodetachment of H- near a metal surface

被引:6
作者
Wang, Dehua [1 ]
Yu, Yongjiang [1 ]
Wang, Hongrun [1 ]
机构
[1] Ludong Univ, Sch Phys & Elect Engn, Yantai 264025, Peoples R China
基金
中国国家自然科学基金;
关键词
CLOSED-ORBIT THEORY; MAGNETIC-FIELDS; CROSS-SECTION; ELECTRIC-FIELD; HYDROGEN-ATOM; IONIZATION;
D O I
10.3788/COL20090703.0176
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
By using the closed orbit theory, the photodetachment cross section of H- near a metal surface is derived and calculated. The results show that the metal surface has great influence on the photodetachment process. As the ion-surface distance is very large, the influence of the electrostatic image potential caused by the metal surface becomes small and can be neglected. The period, action; and length of the detached electron's closed orbit are nearly the same as the case of the photodetachment of H- near an elastic interface. However, with the decrease of the ion-surface distance, the influence of the metal surface becomes significant. The amplitude of the oscillation in the photodetachment cross section becomes complicated. Each resonance peak in the Fourier transformed cross section is associated with one electron's closed orbit. Unlike the case of the photodetachment of H- near an elastic interface, the length of the closed orbit does not equal the twice distance between the ion and the surface. But with the increase of the ion-surface distance, the length of the closed orbit approaches the case of the closed orbit near an elastic interface; which suggests the correctness of our method. This study provides a new understanding on the photodetachment process of H- in the presence of a metal surface.
引用
收藏
页码:176 / 179
页数:4
相关论文
共 50 条
[31]   Photodetachment of H- ion in a nonuniform electric field [J].
Wang, Yi-hao ;
Wang, De-hua ;
Li, Jian-wei .
CANADIAN JOURNAL OF PHYSICS, 2013, 91 (08) :650-657
[32]   A Comparative Study of Theoretical Imaging Technique and Closed Orbit Theory in the Photodetachment of H- near a Soft Spherical Surface [J].
Haneef, Muhammad ;
Arif, Suneela ;
Akbar, Jehan ;
Shah, Nasrullah ;
Mohammad, Saleh ;
Zahir, Muhammad .
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2012, 81 (12)
[33]   The Investigation of Angular Effects of Laser Polarization on the Photodetachment of H- near a Spherical Cavity [J].
Haneef, Muhammad ;
Fakhr-E-Alam ;
Bakhtawar ;
Akbar, Jehan .
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2016, 85 (05)
[34]   Photodetachment of H- near a hard wall with arbitrary laser polarization direction [J].
Iqbal, Azmat ;
Afaq, A. .
CHINESE PHYSICS B, 2015, 24 (08)
[35]   The influence of interface modifier on photodetachment of negative ions in an electric field near a metal surface [J].
Huang Kai-Yun ;
Wang De-Hua .
CHINESE PHYSICS B, 2011, 20 (07)
[36]   Quantum and semiclassical studies on photodetachment cross sections of H- in a harmonic potential [J].
Zhao, Hai-Jun ;
Liu, Wei-Long ;
Du, Meng-Li .
CHINESE PHYSICS B, 2016, 25 (03)
[37]   Photodetachment of negative ion in a gradient electric field near a metal surface [J].
Liu Tian-Qi ;
Wang De-Hua ;
Han Cai ;
Liu Jiang ;
Liang Dong-Qi ;
Xie Si-Cheng .
CHINESE PHYSICS B, 2012, 21 (04)
[38]   Photodetachment of H− in parallel electric and magnetic fields near metal surface [J].
T. T. Tang ;
Z. L. Zhu ;
J. G. Yao ;
D. B. Kong ;
D. F. Yin .
Indian Journal of Physics, 2016, 90 :741-748
[39]   Photodetachment of H~- Near a Dielectric Surface [J].
王德华 ;
黄凯云 .
CommunicationsinTheoreticalPhysics, 2010, 53 (05) :898-902
[40]   Photodetachment microscopy of H- in the magnetic field near different dielectric surfaces [J].
Tang Tian-Tian ;
Zhang Min ;
Zhang Chao-Min .
CHINESE PHYSICS B, 2015, 24 (06)