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Multi-channel Decay Partial Widths of 1,3L° Autoionizing Levels of O6+ Below N=5 Threshold

Received: 30 November 2021     Accepted: 21 December 2021     Published: 29 December 2021
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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.

Published in Nuclear Science (Volume 6, Issue 4)
DOI 10.11648/j.ns.20210604.11
Page(s) 26-34
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2021. Published by Science Publishing Group

Keywords

Autoionization, Electron-electron Interactions, Partial Widths

References
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Cite This Article
  • APA Style

    Ndiaye, O., Tidiane Ba, O., Macoumba Faye, P., Ndiaye, N., Dione, D., et al. (2021). Multi-channel Decay Partial Widths of 1,3L° Autoionizing Levels of O6+ Below N=5 Threshold. Nuclear Science, 6(4), 26-34. https://doi.org/10.11648/j.ns.20210604.11

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    ACS Style

    Ndiaye, O.; Tidiane Ba, O.; Macoumba Faye, P.; Ndiaye, N.; Dione, D., et al. Multi-channel Decay Partial Widths of 1,3L° Autoionizing Levels of O6+ Below N=5 Threshold. Nucl. Sci. 2021, 6(4), 26-34. doi: 10.11648/j.ns.20210604.11

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    AMA Style

    Ndiaye O, Tidiane Ba O, Macoumba Faye P, Ndiaye N, Dione D, et al. Multi-channel Decay Partial Widths of 1,3L° Autoionizing Levels of O6+ Below N=5 Threshold. Nucl Sci. 2021;6(4):26-34. doi: 10.11648/j.ns.20210604.11

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  • @article{10.11648/j.ns.20210604.11,
      author = {Oumar Ndiaye and Oumar Tidiane Ba and Papa Macoumba Faye and Nogaye Ndiaye and Djicknack Dione and Jean Paul Latyr Faye and Alassane Traore and Ababacar Sadikhe Ndao},
      title = {Multi-channel Decay Partial Widths of 1,3L° Autoionizing Levels of O6+ Below N=5 Threshold},
      journal = {Nuclear Science},
      volume = {6},
      number = {4},
      pages = {26-34},
      doi = {10.11648/j.ns.20210604.11},
      url = {https://doi.org/10.11648/j.ns.20210604.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ns.20210604.11},
      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.},
     year = {2021}
    }
    

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  • TY  - JOUR
    T1  - Multi-channel Decay Partial Widths of 1,3L° Autoionizing Levels of O6+ Below N=5 Threshold
    AU  - Oumar Ndiaye
    AU  - Oumar Tidiane Ba
    AU  - Papa Macoumba Faye
    AU  - Nogaye Ndiaye
    AU  - Djicknack Dione
    AU  - Jean Paul Latyr Faye
    AU  - Alassane Traore
    AU  - Ababacar Sadikhe Ndao
    Y1  - 2021/12/29
    PY  - 2021
    N1  - https://doi.org/10.11648/j.ns.20210604.11
    DO  - 10.11648/j.ns.20210604.11
    T2  - Nuclear Science
    JF  - Nuclear Science
    JO  - Nuclear Science
    SP  - 26
    EP  - 34
    PB  - Science Publishing Group
    SN  - 2640-4346
    UR  - https://doi.org/10.11648/j.ns.20210604.11
    AB  - 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.
    VL  - 6
    IS  - 4
    ER  - 

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Author Information
  • Institute of Applied Nuclear Technology (IANT), University Cheikh Anta Diop, Dakar-Fann, Senegal

  • Institute of Applied Nuclear Technology (IANT), University Cheikh Anta Diop, Dakar-Fann, Senegal; Department of Physics, University Cheikh Anta Diop, Dakar-Fann, Senegal

  • Institute of Applied Nuclear Technology (IANT), University Cheikh Anta Diop, Dakar-Fann, Senegal

  • Institute of Applied Nuclear Technology (IANT), University Cheikh Anta Diop, Dakar-Fann, Senegal

  • Institute of Applied Nuclear Technology (IANT), University Cheikh Anta Diop, Dakar-Fann, Senegal

  • Institute of Applied Nuclear Technology (IANT), University Cheikh Anta Diop, Dakar-Fann, Senegal; Department of Physics, University Cheikh Anta Diop, Dakar-Fann, Senegal

  • Institute of Applied Nuclear Technology (IANT), University Cheikh Anta Diop, Dakar-Fann, Senegal; Department of Physics, University Cheikh Anta Diop, Dakar-Fann, Senegal

  • Institute of Applied Nuclear Technology (IANT), University Cheikh Anta Diop, Dakar-Fann, Senegal; Department of Physics, University Cheikh Anta Diop, Dakar-Fann, Senegal

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