Artículo
Helium atom in a box: Doubly excited levels within the S -wave model
Fecha de publicación:
12/2004
Editorial:
American Physical Society
Revista:
Physical Review A: Atomic, Molecular and Optical Physics
ISSN:
1050-2947
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
A complete nonperturbative close-coupling solution of the helium atom in a box problem is presented by developing two numerical techniques. The first technique is the direct solution by diagonalization of the Hamiltonian, and the second is based on a constrained relaxation of the wave functions. A Feshbach projection operator of the direct solutions to the bound-continuum subspaces allows a comparison of the low-lying autoionization levels obtained in both methods. Time-dependent propagation of these doubly excited wave functions is analyzed, allowing the calculation and the visualization of the autoionization process. In this work,
results are presented for the S-wave model in which the electrons are restricted to spherical states and all angular correlations have been eliminated.
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Articulos(IAFE)
Articulos de INST.DE ASTRONOMIA Y FISICA DEL ESPACIO(I)
Articulos de INST.DE ASTRONOMIA Y FISICA DEL ESPACIO(I)
Citación
Mitnik, Dario Marcelo; Helium atom in a box: Doubly excited levels within the S -wave model; American Physical Society; Physical Review A: Atomic, Molecular and Optical Physics; 70; 2; 12-2004; 1-11; 022703
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