Structure of 1f72 and 1g92 nuclei

In order to investigate some approximations involved in the generalized semimicroscopic model (GSMM), a cluster-phonon model is presented in which a hole or two holes and one particle are coupled between them through Q-Q plus pairing interactions, and to the quadrupole vibrations of a doubly even co...

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Autores principales: Heras, C.A., Abecasis, S.M.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_05562813_v12_n5_p1659_Heras
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_05562813_v12_n5_p1659_Heras2023-10-03T15:34:26Z Structure of 1f72 and 1g92 nuclei Heras, C.A. Abecasis, S.M. In order to investigate some approximations involved in the generalized semimicroscopic model (GSMM), a cluster-phonon model is presented in which a hole or two holes and one particle are coupled between them through Q-Q plus pairing interactions, and to the quadrupole vibrations of a doubly even core having a closed shell. Anharmonicities are also included phenomenologically. Matrix elements are computed using graphical methods and nunumerical calculations are performed for Co57 and In115, selected as well known examples of odd-mass nuclei in the 1f72 and 1g92 shells, respectively. A good fit to energy levels is achieved through a reasonable variation of the model parameters, and the predictions of the GSMM about the nature of the low-lying levels in both nuclei are confirmed. The calculated electromagnetic properties and spectroscopic factors compare favorably with experiment except for some discrepancies in In115. NUCLEAR STRUCTURE Co57, In115; calculated levels, J, π, B(E2), B(M1), q, μ, S, b, τ. Cluster-phonon model; 2h-1p excitations, anharmonicities. © 1975 The American Physical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_05562813_v12_n5_p1659_Heras
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description In order to investigate some approximations involved in the generalized semimicroscopic model (GSMM), a cluster-phonon model is presented in which a hole or two holes and one particle are coupled between them through Q-Q plus pairing interactions, and to the quadrupole vibrations of a doubly even core having a closed shell. Anharmonicities are also included phenomenologically. Matrix elements are computed using graphical methods and nunumerical calculations are performed for Co57 and In115, selected as well known examples of odd-mass nuclei in the 1f72 and 1g92 shells, respectively. A good fit to energy levels is achieved through a reasonable variation of the model parameters, and the predictions of the GSMM about the nature of the low-lying levels in both nuclei are confirmed. The calculated electromagnetic properties and spectroscopic factors compare favorably with experiment except for some discrepancies in In115. NUCLEAR STRUCTURE Co57, In115; calculated levels, J, π, B(E2), B(M1), q, μ, S, b, τ. Cluster-phonon model; 2h-1p excitations, anharmonicities. © 1975 The American Physical Society.
format JOUR
author Heras, C.A.
Abecasis, S.M.
spellingShingle Heras, C.A.
Abecasis, S.M.
Structure of 1f72 and 1g92 nuclei
author_facet Heras, C.A.
Abecasis, S.M.
author_sort Heras, C.A.
title Structure of 1f72 and 1g92 nuclei
title_short Structure of 1f72 and 1g92 nuclei
title_full Structure of 1f72 and 1g92 nuclei
title_fullStr Structure of 1f72 and 1g92 nuclei
title_full_unstemmed Structure of 1f72 and 1g92 nuclei
title_sort structure of 1f72 and 1g92 nuclei
url http://hdl.handle.net/20.500.12110/paper_05562813_v12_n5_p1659_Heras
work_keys_str_mv AT herasca structureof1f72and1g92nuclei
AT abecasissm structureof1f72and1g92nuclei
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