Research Article
Multi-channel Decay Partial Widths of 1,3L° Autoionizing Levels of O6+ Below N=5 Threshold
Oumar Ndiaye*,
Oumar Tidiane Ba,
Papa Macoumba Faye,
Nogaye Ndiaye,
Djicknack Dione,
Jean Paul Latyr Faye,
Alassane Traore,
Ababacar Sadikhe Ndao
Issue:
Volume 6, Issue 4, December 2021
Pages:
26-34
Received:
30 November 2021
Accepted:
21 December 2021
Published:
29 December 2021
DOI:
10.11648/j.ns.20210604.11
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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.
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 ...
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