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dc.contributor.author
Mitnik, Dario Marcelo
dc.date.available
2017-07-24T19:05:01Z
dc.date.issued
2004-12
dc.identifier.citation
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
dc.identifier.issn
1050-2947
dc.identifier.uri
http://hdl.handle.net/11336/21188
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject.classification
Física Atómica, Molecular y Química
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Helium atom in a box: Doubly excited levels within the S -wave model
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-07-24T14:12:44Z
dc.journal.volume
70
dc.journal.number
2
dc.journal.pagination
1-11; 022703
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Mitnik, Dario Marcelo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
dc.journal.title
Physical Review A: Atomic, Molecular and Optical Physics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevA.70.022703
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/pra/abstract/10.1103/PhysRevA.70.022703
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