Two-Electron Photoejection of He and H{sup {minus}}
- Department of Physics and JILA, University of Colorado, Boulder, Colorado 80309-0440 (United States)
In order to overcome difficulties in the description of the two-electron continuum problem, we develop a finite element method to treat two-electron escape processes. Two-electron photoejection cross sections are obtained for helium and H{sup {minus}} at photon energies in the range of 79{endash}460 and 14.4{endash}110eV. The H{sup {minus}} double detachment calculations are apparently the first nonperturbative quantum results in this energy range since the pioneering work of Broad and Reinhardt in 1976. Our branching ratio between single and double detachment of H{sup {minus}} peaks at a value 25{percent}{endash}40{percent} higher than the results from that early study. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 531874
- Journal Information:
- Physical Review Letters, Vol. 78, Issue 26; Other Information: PBD: Jun 1997
- Country of Publication:
- United States
- Language:
- English
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