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Abstract:

A numerical method for calculating the full spectrum of the helium atom in a box was developed. The calculations were performed for the S-wave model He, in which only spherical states were taken into account. With the help of time propagation of the relaxed wave function, the autoionization rate by monitoring the autocorrelation amplitude in time was calculated. The reliability of the numerical procedure was proved when a Fescbach projection of an eigenvector was absolutely consistent with the relaxed wave function.

Registro:

Documento: Artículo
Título:Helium atom in a box: Doubly excited levels within the S-wave model
Autor:Mitnik, D.M.
Filiación:Departmento de Física, FCEyN, Universidad de Buenos Aires, (C1428EGA) Buenos Aires, Argentina
Inst. de Astron. y Fis. del Espacio, Casilla de Correo 67, Sucursal 28, (C1428EGA) Buenos Aires, Argentina
Palabras clave:Computational complexity; Couplings; Eigenvalues and eigenfunctions; Electrons; Hamiltonians; Mathematical models; Numerical methods; Quantum theory; Vectors; Close-coupling techniques; Doubly excited levels; Helium atoms; Wave functions; Helium
Año:2004
Volumen:70
Número:2
Página de inicio:022703
Página de fin:1-0227031-1
DOI: http://dx.doi.org/10.1103/PhysRevA.70.022703
Título revista:Physical Review A - Atomic, Molecular, and Optical Physics
Título revista abreviado:Phys Rev A
ISSN:10502947
CODEN:PLRAA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v70_n2_p022703_Mitnik

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Citas:

---------- APA ----------
(2004) . Helium atom in a box: Doubly excited levels within the S-wave model. Physical Review A - Atomic, Molecular, and Optical Physics, 70(2), 022703-1-0227031-1.
http://dx.doi.org/10.1103/PhysRevA.70.022703
---------- CHICAGO ----------
Mitnik, D.M. "Helium atom in a box: Doubly excited levels within the S-wave model" . Physical Review A - Atomic, Molecular, and Optical Physics 70, no. 2 (2004) : 022703-1-0227031-1.
http://dx.doi.org/10.1103/PhysRevA.70.022703
---------- MLA ----------
Mitnik, D.M. "Helium atom in a box: Doubly excited levels within the S-wave model" . Physical Review A - Atomic, Molecular, and Optical Physics, vol. 70, no. 2, 2004, pp. 022703-1-0227031-1.
http://dx.doi.org/10.1103/PhysRevA.70.022703
---------- VANCOUVER ----------
Mitnik, D.M. Helium atom in a box: Doubly excited levels within the S-wave model. Phys Rev A. 2004;70(2):022703-1-0227031-1.
http://dx.doi.org/10.1103/PhysRevA.70.022703