Helium atom in a box: Doubly excited levels within the S-wave model
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...
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Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v70_n2_p022703_Mitnik http://hdl.handle.net/20.500.12110/paper_10502947_v70_n2_p022703_Mitnik |
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paper:paper_10502947_v70_n2_p022703_Mitnik2023-06-08T16:02:14Z Helium atom in a box: Doubly excited levels within the S-wave model Mitnik, Dario Marcelo 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 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. Fil:Mitnik, D.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v70_n2_p022703_Mitnik http://hdl.handle.net/20.500.12110/paper_10502947_v70_n2_p022703_Mitnik |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
topic |
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 |
spellingShingle |
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 Mitnik, Dario Marcelo Helium atom in a box: Doubly excited levels within the S-wave model |
topic_facet |
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 |
description |
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. |
author |
Mitnik, Dario Marcelo |
author_facet |
Mitnik, Dario Marcelo |
author_sort |
Mitnik, Dario Marcelo |
title |
Helium atom in a box: Doubly excited levels within the S-wave model |
title_short |
Helium atom in a box: Doubly excited levels within the S-wave model |
title_full |
Helium atom in a box: Doubly excited levels within the S-wave model |
title_fullStr |
Helium atom in a box: Doubly excited levels within the S-wave model |
title_full_unstemmed |
Helium atom in a box: Doubly excited levels within the S-wave model |
title_sort |
helium atom in a box: doubly excited levels within the s-wave model |
publishDate |
2004 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v70_n2_p022703_Mitnik http://hdl.handle.net/20.500.12110/paper_10502947_v70_n2_p022703_Mitnik |
work_keys_str_mv |
AT mitnikdariomarcelo heliumatominaboxdoublyexcitedlevelswithintheswavemodel |
_version_ |
1768542517039464448 |