Photodetachment of hydrogen negative ions with screened Coulomb interaction

Journal Article · Tue Jun 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.065402· OSTI ID:21437982

Zhang, Song Bin; Chen, Xiang Jun ^[1]; Wang, Jian Guo ^[2]; Janev, R K ^[3]; Qu, Yi Zhi ^[4]

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1. Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026 (China)
2. The Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, PO Box 8009, Beijing 100088 (China)
3. Macedonian Academy of Sciences and Arts, PO Box 428, 1000 Skopje (Macedonia, The Former Yugoslav Republic of)
4. College of Material Sciences and Optoelectronic Technology, Graduate School of the Chinese Academy of Sciences, PO Box 4588, Beijing 100049 (China)

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{sup -} 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.

• OSTI ID: 21437982
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 81; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ANIONS
CHARGED PARTICLES
COLLISIONS
COULOMB FIELD
CROSS SECTIONS
ELECTRIC FIELDS
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EXCITATION
HYDROGEN
HYDROGEN IONS
HYDROGEN IONS 1 MINUS
ION COLLISIONS
IONS
MATRICES
NONMETALS
PHOTON COLLISIONS
PHOTON-ION COLLISIONS
R MATRIX
RESONANCE