On the interplay between rotation, deformation and pairing

The influence of angular momentum on the extension of deformed regions is studied. Techniques based on the similarity between pairing rotational bands and ordinary rotational bands are used. Indications for an increase of deformation with increasing spin is obtained for rare-earth nuclei with neutro...

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Detalles Bibliográficos
Autores principales: Bengtsson, R, Zhang, J, Åberg, S, Ragnarsson, I
Lenguaje:eng
Publicado: CERN 1981
Materias:
Nuclear Physics
Acceso en línea:https://dx.doi.org/10.5170/CERN-1981-009.509
http://cds.cern.ch/record/878174
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author Bengtsson, R
Zhang, J
Åberg, S
Ragnarsson, I
author_facet Bengtsson, R
Zhang, J
Åberg, S
Ragnarsson, I
author_sort Bengtsson, R
collection CERN
description The influence of angular momentum on the extension of deformed regions is studied. Techniques based on the similarity between pairing rotational bands and ordinary rotational bands are used. Indications for an increase of deformation with increasing spin is obtained for rare-earth nuclei with neutron numbers N=88-90. The yrast states of odd and even nuclei and of positive and negative parity are compared on an absolute scale. It is found that, in the rare-earth region, the odd-even energy difference has almost disappeared for I>or=14. However, by considering both positive- and negative-parity yrast states, it is concluded that a substantial pairing gap exists also at higher spins. (23 refs).
id cern-878174
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1981
publisher CERN
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spelling cern-8781742019-09-30T06:29:59Zdoi:10.5170/CERN-1981-009.509http://cds.cern.ch/record/878174engBengtsson, RZhang, JÅberg, SRagnarsson, IOn the interplay between rotation, deformation and pairingNuclear PhysicsThe influence of angular momentum on the extension of deformed regions is studied. Techniques based on the similarity between pairing rotational bands and ordinary rotational bands are used. Indications for an increase of deformation with increasing spin is obtained for rare-earth nuclei with neutron numbers N=88-90. The yrast states of odd and even nuclei and of positive and negative parity are compared on an absolute scale. It is found that, in the rare-earth region, the odd-even energy difference has almost disappeared for I>or=14. However, by considering both positive- and negative-parity yrast states, it is concluded that a substantial pairing gap exists also at higher spins. (23 refs).CERNoai:cds.cern.ch:8781741981
spellingShingle Nuclear Physics
Bengtsson, R
Zhang, J
Åberg, S
Ragnarsson, I
On the interplay between rotation, deformation and pairing
title On the interplay between rotation, deformation and pairing
title_full On the interplay between rotation, deformation and pairing
title_fullStr On the interplay between rotation, deformation and pairing
title_full_unstemmed On the interplay between rotation, deformation and pairing
title_short On the interplay between rotation, deformation and pairing
title_sort on the interplay between rotation, deformation and pairing
topic Nuclear Physics
url https://dx.doi.org/10.5170/CERN-1981-009.509
http://cds.cern.ch/record/878174
work_keys_str_mv AT bengtssonr ontheinterplaybetweenrotationdeformationandpairing
AT zhangj ontheinterplaybetweenrotationdeformationandpairing
AT abergs ontheinterplaybetweenrotationdeformationandpairing
AT ragnarssoni ontheinterplaybetweenrotationdeformationandpairing

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