Double autoionization of He{sup -}(2s{sup 2}2p {sup 2}P)
- Department of Physics, Auburn University, Auburn, Alabama 36849 (United States)
The double autoionization rate for the He{sup -}(2s{sup 2}2p {sup 2}P) hollow atom state is calculated using a nonperturbative time-dependent close-coupling method. The nine-dimensional wave function for the three electron atom is expanded in coupled spherical harmonics. The time-dependent Schroedinger equation is then reduced to a set of close-coupled partial differential equations for the three-dimensional radial expansion functions. Relaxation in imaginary time subject to orthogonality constraints yields a 2s{sup 2}2p {sup 2}P hollow atom state with real energy, while propagation in real time yields total and double Auger rates. The total Auger rate is in reasonable agreement with previous saddle-point complex-rotation calculations. The double Auger rate is found to be 10% of the total Auger rate, in keeping with the relatively large double to total ratio found in recent experiments for He{sup -}(2s2p{sup 2} {sup 4}P)
- OSTI ID:
- 20787512
- Journal Information:
- Physical Review. A, Vol. 73, Issue 6; Other Information: DOI: 10.1103/PhysRevA.73.062720; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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