Photodetachment of hydrogen negative ions with screened Coulomb interaction

被引：20

作者：

Zhang, Song Bin ^{[1
,2
]}

Wang, Jian Guo ^{[3
]}

Janev, R. K. ^{[4
]}

Qu, Yi Zhi ^{[5
]}

Chen, Xiang Jun ^{[1
,2
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China

[2] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China

[3] Inst Appl Phys & Computat Math, Key Lab Computat Phys, Beijing 100088, Peoples R China

[4] Macedonian Acad Sci & Arts, Skopje 1000, North Macedonia

[5] Chinese Acad Sci, Grad Sch, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China

来源：

PHYSICAL REVIEW A | 2010年 / 81卷 / 06期

基金：

中国国家自然科学基金;

关键词：

ELECTRON-IMPACT EXCITATION; R-MATRIX; SCATTERING; PROBABILITIES; PLASMAS;

D O I：

10.1103/PhysRevA.81.065402

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The effects of Coulomb interaction screening on photodetachment cross sections of hydrogen negative ions below the n = 2 excitation threshold is investigated by using the R-matrix method with pseudostates. The contributions of Feshbach and shape resonances to H- photodetachment cross section are presented when screening length (D) varies from D = infinity to D = 4.6 a.u. It is found that the interaction screening has dramatic effects on the photodetachment cross sections of hydrogen negative ions in the photoelectron energy region around the n = 2 excitation threshold by strongly affecting the evolution of near-threshold resonances.

引用

页数：4

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