摘要The photodetachment cross section of H- in parallel electric and magnetic fields near an elastic surface is derived and calculated by using the closed orbit theory. It is found that the elastic surface can produce some interesting effects. Besides the closed orbits previously found by Peters et al. for the H- in parallel electric and magnetic fields, some additional closed orbits are produced due to the effect of the elastic surface. The results show that the cross section oscillation is much more complicated in comparison with the cross section of H- in parallel external fields without surface. Each peak in the Fourier transformed cross section corresponds to the period of one detached electron closed orbit. This study provides a new understanding of the photodetachment of negative ions in the presence of external fields and surface.
Abstract：The photodetachment cross section of H- in parallel electric and magnetic fields near an elastic surface is derived and calculated by using the closed orbit theory. It is found that the elastic surface can produce some interesting effects. Besides the closed orbits previously found by Peters et al. for the H- in parallel electric and magnetic fields, some additional closed orbits are produced due to the effect of the elastic surface. The results show that the cross section oscillation is much more complicated in comparison with the cross section of H- in parallel external fields without surface. Each peak in the Fourier transformed cross section corresponds to the period of one detached electron closed orbit. This study provides a new understanding of the photodetachment of negative ions in the presence of external fields and surface.
WANG De-Hua. Photodetachment of H- near Elastic Surface in Parallel Electric and Magnetic Fields[J]. 中国物理快报, 2007, 24(7): 1886-1889.
WANG De-Hua. Photodetachment of H- near Elastic Surface in Parallel Electric and Magnetic Fields. Chin. Phys. Lett., 2007, 24(7): 1886-1889.
[1] Bryant H C et al 1987 Phys. Rev. Lett. 58 2412 [2] Rau A R P and Wong H 1988 Phys. Rev. A 37 632 [3] Peters A D, Jaffe C and Delos J B 1997 Phys. Rev. A 56331 [4] Peters A D and Delos J B 1993 Phys. Rev. A 47 3020 Peters A D and Delos J B 1993 Phys. Rev. A 47 3036 [5] Liu Z Y and Wang D H 1997 Phys. Rev. A 55 4605 Liu Z Y and Wang D H 1997 Phys. Rev. A 56 2670 [6] Du M L and Delos J B 1988 Phys. Rev. A 38 1896 [7] Yang G C et al %, Zheng Y Z and Chi X X2005 Chin. Phys. Lett. 22 2233 [8] Yang G C et al %, Zheng Y Z and Chi X X2006 Phys. Rev. A 73 043413 [9] Afaq A and Du M L 2007 J. Phys. B 40 1309 [10] Wang D H 2007 Chin. Phys. Lett. 24 400 [11] Peters A D et al %, Jaffe C, Gao J and Delos J B1997 Phys.Rev. A 56 345 [12] Lloyd G R et al %, Procter S R and Softley T2005 Phys. Rev. Lett. 95 133202 [13] Hu J et al %, Han K L and He G Z2007 Phys. Rev. Lett. 95123001 [14] Hu J et al %, Wang M S, Han K L and He G Z2007 Phys. Rev. A 74 063417
2007, Vol. 24 
