Electron-He{sup +} P-wave elastic scattering and photoabsorption in two-electron systems
- NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771 (United States)
In a previous paper [A. K. Bhatia, Phys. Rev. A 69, 032714 (2004)], electron-hydrogen P-wave scattering phase shifts were calculated using the optical potential approach based on the Feshbach projection operator formalism. This method is now extended to the singlet and triplet electron-He{sup +} P-wave scattering in the elastic region. Phase shifts are calculated using Hylleraas-type correlation functions with up to 220 terms. Results are rigorous lower bounds to the exact phase shifts, and they are compared to phase shifts obtained from the method of polarized orbitals and close-coupling calculations. The continuum functions calculated here are used to calculate photoabsorption cross sections. Photoionization cross sections of He and photodetachment cross sections of H{sup -} are calculated in the elastic region--i.e., leaving He{sup +} and H in their respective ground states--and compared with previous calculations. Radiative attachment rates are also calculated.
- OSTI ID:
- 20786709
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 1 Vol. 73; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CORRELATION FUNCTIONS
COUPLING
CROSS SECTIONS
ELASTIC SCATTERING
ELECTRON ATTACHMENT
ELECTRON DETACHMENT
ELECTRON-ATOM COLLISIONS
ELECTRONS
EXCITATION
GROUND STATES
HELIUM IONS
HYDROGEN
HYDROGEN IONS 1 MINUS
P WAVES
PHASE SHIFT
PHOTOIONIZATION
PHOTON-ATOM COLLISIONS
POTENTIALS
PROJECTION OPERATORS
TRIPLETS