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Volume 6 , Issue 4 , December 2021 , Pages: 26 - 34
Multi-channel Decay Partial Widths of 1,3L° Autoionizing Levels of O6+ Below N=5 Threshold
Oumar Ndiaye, Institute of Applied Nuclear Technology (IANT), University Cheikh Anta Diop, Dakar-Fann, Senegal
Oumar Tidiane Ba, Institute of Applied Nuclear Technology (IANT), University Cheikh Anta Diop, Dakar-Fann, Senegal; Department of Physics, University Cheikh Anta Diop, Dakar-Fann, Senegal
Pape Macoumaba Faye, Institute of Applied Nuclear Technology (IANT), University Cheikh Anta Diop, Dakar-Fann, Senegal
Nogaye Ndiaye, Institute of Applied Nuclear Technology (IANT), University Cheikh Anta Diop, Dakar-Fann, Senegal
Djicknack Dione, Institute of Applied Nuclear Technology (IANT), University Cheikh Anta Diop, Dakar-Fann, Senegal
Jean Paul Latyr Faye, Institute of Applied Nuclear Technology (IANT), University Cheikh Anta Diop, Dakar-Fann, Senegal; Department of Physics, University Cheikh Anta Diop, Dakar-Fann, Senegal
Alassane Traore, Institute of Applied Nuclear Technology (IANT), University Cheikh Anta Diop, Dakar-Fann, Senegal; Department of Physics, University Cheikh Anta Diop, Dakar-Fann, Senegal
Ababacar Sadikhe Ndao, Institute of Applied Nuclear Technology (IANT), University Cheikh Anta Diop, Dakar-Fann, Senegal; Department of Physics, University Cheikh Anta Diop, Dakar-Fann, Senegal
Received: Nov. 30, 2021;       Accepted: Dec. 21, 2021;       Published: Dec. 29, 2021
DOI: 10.11648/j.ns.20210604.11        View        Downloads  
Abstract
The motivation of the diagonalization method is to take into consideration the coupling between closed and opened channels in term of perturbation theory and to neglect the indirect coupling as well but also the autoionisation states through the opened channels. This procedure leads to a relatively simple mathematical problem consisting of solving a system of linear algebraic equations instead of a system of coupled differential equations or integro-differential equations. In this paper, we will focus on the Resonance positions, Partial and total widths for the autoionization into various decay channels of some 1,3L° doubly excited states of helium-like oxygen ion O6+ converging on the N=5 hydrogenic thresholds are reported for L=1, 2, 3, 4, 5, 6 and 7. The calculation was made in the framework of the diagonalization method approximation in LS coupling scheme. The partial widths for multi-channel autoionizing levels to sublevels of O7+ are calculated by neglecting the direct coupling between the open channels. We were able to find results consistent with some in the literature. It is about the configuration P, D, F, G, H, I and K. We could see that the decays are relatively dependent on the ionization thresholds of the residual ion O7+. Some analyses are made on these resultast and only according to the level of decay focused in this paper then made a surplus in the framework of nuclear spectroscopy.
Keywords
Autoionization, Electron-electron Interactions, Partial Widths
To cite this article
Oumar Ndiaye, Oumar Tidiane Ba, Pape Macoumaba Faye, Nogaye Ndiaye, Djicknack Dione, Jean Paul Latyr Faye, Alassane Traore, Ababacar Sadikhe Ndao, Multi-channel Decay Partial Widths of 1,3L° Autoionizing Levels of O6+ Below N=5 Threshold, Nuclear Science. Vol. 6, No. 4, 2021, pp. 26-34. doi: 10.11648/j.ns.20210604.11
Copyright
Copyright © 2021 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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