Lifetime measurement of neutron-rich even-even molybdenum isotopes

D. Ralet et al. -- 11 pags., 10 figs., 3 tabs.

Bibliographic Details
Authors: Ralet, D., Pietri, S., Rodríguez, T., Domingo Pardo, César, Gadea, Andrés, González, V., Hüyük, T., Jungclaus, Andrea, Quintana, B., Sanchis, E.
Format: article
Status:Published version
Publication Date:2017
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/161486
Online Access:http://hdl.handle.net/10261/161486
Access Level:Open access
Keyword:ddc:530
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dc.title.none.fl_str_mv Lifetime measurement of neutron-rich even-even molybdenum isotopes
title Lifetime measurement of neutron-rich even-even molybdenum isotopes
spellingShingle Lifetime measurement of neutron-rich even-even molybdenum isotopes
Ralet, D.
ddc:530
title_short Lifetime measurement of neutron-rich even-even molybdenum isotopes
title_full Lifetime measurement of neutron-rich even-even molybdenum isotopes
title_fullStr Lifetime measurement of neutron-rich even-even molybdenum isotopes
title_full_unstemmed Lifetime measurement of neutron-rich even-even molybdenum isotopes
title_sort Lifetime measurement of neutron-rich even-even molybdenum isotopes
dc.creator.none.fl_str_mv Ralet, D.
Pietri, S.
Rodríguez, T.
Domingo Pardo, César
Gadea, Andrés
González, V.
Hüyük, T.
Jungclaus, Andrea
Quintana, B.
Sanchis, E.
author Ralet, D.
author_facet Ralet, D.
Pietri, S.
Rodríguez, T.
Domingo Pardo, César
Gadea, Andrés
González, V.
Hüyük, T.
Jungclaus, Andrea
Quintana, B.
Sanchis, E.
author_role author
author2 Pietri, S.
Rodríguez, T.
Domingo Pardo, César
Gadea, Andrés
González, V.
Hüyük, T.
Jungclaus, Andrea
Quintana, B.
Sanchis, E.
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Generalitat Valenciana
Ministerio de Economía y Competitividad (España)
Science and Technology Facilities Council (UK)
Federal Ministry of Education and Research (Germany)
Swedish Research Council
European Commission
Helmholtz International Center for FAIR
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv ddc:530
topic ddc:530
description D. Ralet et al. -- 11 pags., 10 figs., 3 tabs.
publishDate 2017
dc.date.none.fl_str_mv 2017
2018
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/161486
url http://hdl.handle.net/10261/161486
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/FP7/262010
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FPA2014-57196-C5,
https://doi.org/10.1103/PhysRevC.95.034320
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
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spelling Lifetime measurement of neutron-rich even-even molybdenum isotopesRalet, D.Pietri, S.Rodríguez, T.Domingo Pardo, CésarGadea, AndrésGonzález, V.Hüyük, T.Jungclaus, AndreaQuintana, B.Sanchis, E.ddc:530D. Ralet et al. -- 11 pags., 10 figs., 3 tabs.Background: In the neutron-rich A≈100 mass region, rapid shape changes as a function of nucleon number as well as coexistence of prolate, oblate, and triaxial shapes are predicted by various theoretical models. Lifetime measurements of excited levels in the molybdenum isotopes allow the determination of transitional quadrupole moments, which in turn provides structural information regarding the predicted shape change. Purpose: The present paper reports on the experimental setup, the method that allowed one to measure the lifetimes of excited states in even-even molybdenum isotopes from mass A=100 up to mass A=108, and the results that were obtained. Method: The isotopes of interest were populated by secondary knock-out reaction of neutron-rich nuclei separated and identified by the GSI fragment separator at relativistic beam energies and detected by the sensitive PreSPEC-AGATA experimental setup. The latter included the Lund-York-Cologne calorimeter for identification, tracking, and velocity measurement of ejectiles, and AGATA, an array of position sensitive segmented HPGe detectors, used to determine the interaction positions of the γ ray enabling a precise Doppler correction. The lifetimes were determined with a relativistic version of the Doppler-shift-attenuation method using the systematic shift of the energy after Doppler correction of a γ-ray transition with a known energy. This relativistic Doppler-shift-attenuation method allowed the determination of mean lifetimes from 2 to 250 ps. Results: Even-even molybdenum isotopes from mass A=100 to A=108 were studied. The decays of the low-lying states in the ground-state band were observed. In particular, two mean lifetimes were measured for the first time: τ=29.7-9.1+11.3 ps for the 4+ state of Mo108 and τ=3.2-0.7+0.7 ps for the 6+ state of Mo102. Conclusions: The reduced transition strengths B(E2), calculated from lifetimes measured in this experiment, compared to beyond-mean-field calculations, indicate a gradual shape transition in the chain of molybdenum isotopes when going from A=100 to A=108 with a maximum reached at N=64. The transition probabilities decrease for Mo108 which may be related to its well-pronounced triaxial shape indicated by the calculations.This work was supported by the BMBF under Grants No. 05P09RDFN4, No. 05P12RDFN8, and No. 05P12PKFNE and by the LOEWE center HIC for FAIR. Part of this work was supported by the P2IO excellence center. This work was also supported by the European Community FP7–Capacities, ENSAR Contract No. 262010, by the Swedish Research Council under Contracts No. 2010-147, No. 2010-3694, No. 2011-5253, No. 2011-6127, and No. 2014-5558, by the IN2P3- GSI No. 02-42 collaboration, by the Science and Technology Facilities Council (STFC) and by MINECO, Spain, under Grant No. FPA2014-57196-C5, and Generalitat Valenciana, Spain, under Grant No. PROMETEOII/2014/019Peer ReviewedAmerican Physical SocietyGeneralitat ValencianaMinisterio de Economía y Competitividad (España)Science and Technology Facilities Council (UK)Federal Ministry of Education and Research (Germany)Swedish Research CouncilEuropean CommissionHelmholtz International Center for FAIRConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2018201820172018info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/161486reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/FP7/262010info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FPA2014-57196-C5,https://doi.org/10.1103/PhysRevC.95.034320Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1614862026-05-22T06:33:51Z
score 15,811543

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