Analysis of two phenomenological descriptions of ground-state bands in spherical and closed-shell nuclei

Recent results concerning the application of the centrifugal stretching and the variable-moment-of-inertia (VMI) models to the description of ground-state bands in near-harmonic nuclei are discussed. As an extension of previous work dealing with deformed nuclei, the solutions of the centrifugal-stre...

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Autores principales: Gorfinkiel, J.I., Mariscotti, M.A.J., Pomar, C.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_05562813_v9_n4_p1243_Gorfinkiel
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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_v9_n4_p1243_Gorfinkiel2023-10-03T15:35:11Z Analysis of two phenomenological descriptions of ground-state bands in spherical and closed-shell nuclei Gorfinkiel, J.I. Mariscotti, M.A.J. Pomar, C. Recent results concerning the application of the centrifugal stretching and the variable-moment-of-inertia (VMI) models to the description of ground-state bands in near-harmonic nuclei are discussed. As an extension of previous work dealing with deformed nuclei, the solutions of the centrifugal-stretching model which apply to near-harmonic and closed-shell nuclei are obtained and compared with those of the VMI model. In both cases there is more than one solution which applies to these nuclei. The irregularities observed in a plot of energy ratios EIE2 vs E4E2 for E4E2∼2 are not well reproduced by either description but the predictions of the VMI model appear to correspond to the maximum and minimum values found experimentally. In the Te isotopes the transition between these limits takes place in a smooth way as the number of neutrons increases. The data of magic nuclei are only accurately reproduced by the VMI model. The ratios E4E2 for these nuclei are found to be correlated with the extra binding due to closed shells. [NUCLEAR STRUCTURE Complete solutions centrifugal stretching model. Comparison with VMI model for closed and near-closed shell nuclei.] © 1974 The American Physical Society. Fil:Mariscotti, M.A.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_05562813_v9_n4_p1243_Gorfinkiel
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description Recent results concerning the application of the centrifugal stretching and the variable-moment-of-inertia (VMI) models to the description of ground-state bands in near-harmonic nuclei are discussed. As an extension of previous work dealing with deformed nuclei, the solutions of the centrifugal-stretching model which apply to near-harmonic and closed-shell nuclei are obtained and compared with those of the VMI model. In both cases there is more than one solution which applies to these nuclei. The irregularities observed in a plot of energy ratios EIE2 vs E4E2 for E4E2∼2 are not well reproduced by either description but the predictions of the VMI model appear to correspond to the maximum and minimum values found experimentally. In the Te isotopes the transition between these limits takes place in a smooth way as the number of neutrons increases. The data of magic nuclei are only accurately reproduced by the VMI model. The ratios E4E2 for these nuclei are found to be correlated with the extra binding due to closed shells. [NUCLEAR STRUCTURE Complete solutions centrifugal stretching model. Comparison with VMI model for closed and near-closed shell nuclei.] © 1974 The American Physical Society.
format JOUR
author Gorfinkiel, J.I.
Mariscotti, M.A.J.
Pomar, C.
spellingShingle Gorfinkiel, J.I.
Mariscotti, M.A.J.
Pomar, C.
Analysis of two phenomenological descriptions of ground-state bands in spherical and closed-shell nuclei
author_facet Gorfinkiel, J.I.
Mariscotti, M.A.J.
Pomar, C.
author_sort Gorfinkiel, J.I.
title Analysis of two phenomenological descriptions of ground-state bands in spherical and closed-shell nuclei
title_short Analysis of two phenomenological descriptions of ground-state bands in spherical and closed-shell nuclei
title_full Analysis of two phenomenological descriptions of ground-state bands in spherical and closed-shell nuclei
title_fullStr Analysis of two phenomenological descriptions of ground-state bands in spherical and closed-shell nuclei
title_full_unstemmed Analysis of two phenomenological descriptions of ground-state bands in spherical and closed-shell nuclei
title_sort analysis of two phenomenological descriptions of ground-state bands in spherical and closed-shell nuclei
url http://hdl.handle.net/20.500.12110/paper_05562813_v9_n4_p1243_Gorfinkiel
work_keys_str_mv AT gorfinkielji analysisoftwophenomenologicaldescriptionsofgroundstatebandsinsphericalandclosedshellnuclei
AT mariscottimaj analysisoftwophenomenologicaldescriptionsofgroundstatebandsinsphericalandclosedshellnuclei
AT pomarc analysisoftwophenomenologicaldescriptionsofgroundstatebandsinsphericalandclosedshellnuclei
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