beta(-)-delayed spectroscopy of neutron-rich tantalum nuclei: Shape evolution in neutron-rich tungsten isotopes

N. Alkhomashi; P. H. Regan; Zs Podolyak; S. Pietri; A. B. Garnsworthy; S. J. Steer; J. Benlliure; E. Caserejos; R. F. Casten; J. Gerl; H. J. Wollersheim; J. Grebosz; G. Farrelly; M. Gorska; I. Kojouharov; H. Schaffner; A. Algora; G. Benzoni; A. Blazhev; P. Boutachkov; A. M. Bruce; A. M. Denis Bacelar; I. J. Cullen; L. Caceres; P. Doornenbal; M. E. Estevez; Y. Fujita; W. Gelletly; R. Hoischen; R. Kumar; N. Kurz; S. Lalkovski; Z. Liu; C. Mihai; F. Molina; A. I. Morales; D. Muecher; W. Prokopowicz; B. Rubio; Y. Shi; A. Tamii; S. Tashenov; J. J. Valiente-Dobon; P. M. Walker; P. J. Woods; F. R. Xu

doi:10.1103/PhysRevC.80.064308

Journal article

beta(-)-delayed spectroscopy of neutron-rich tantalum nuclei: Shape evolution in neutron-rich tungsten isotopes

N. Alkhomashi, P. H. Regan, Zs Podolyak, S. Pietri, A. B. Garnsworthy, S. J. Steer, J. Benlliure, E. Caserejos, R. F. Casten, J. Gerl, …

Physical review. C, Nuclear physics, Vol.80(6)

01/12/2009

DOI: https://doi.org/10.1103/PhysRevC.80.064308

Abstract

Physical Sciences

Physics

Physics, Nuclear

Science & Technology

The low-lying structure of W-188,W-190,W-192 has been studied following beta decays of the neutron-rich mother nuclei Ta-188,Ta-190,Ta-192 produced following the projectile fragmentation of a 1-GeV-per-nucleon Pb-208 primary beam on a natural beryllium target at the GSI Fragment Separator. The beta-decay half-lives of Ta-188, Ta-190, and Ta-192 have been measured, with gamma-ray decays of low-lying states in their respective W daughter nuclei, using heavy-ion beta-gamma correlations and a position-sensitive silicon detector setup. The data provide information on the low-lying excited states in W-188, W-190, and W-192, which highlight a change in nuclear shape at W-190 compared with that of lighter W isotopes. This evolution of ground-state structure along the W isotopic chain is discussed as evidence for a possible proton subshell effect for the A similar to 190 region and is consistent with maximization of the gamma-softness of the nuclear potential around N similar to 116.

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Title: beta(-)-delayed spectroscopy of neutron-rich tantalum nuclei: Shape evolution in neutron-rich tungsten isotopes
Creators - without role: N. Alkhomashi - University of Surrey
P. H. Regan - University of Surrey
Zs Podolyak - University of Surrey
S. Pietri - University of Surrey
A. B. Garnsworthy - University of Surrey
S. J. Steer - University of Surrey
J. Benlliure - Universidade de Santiago de Compostela
E. Caserejos - Universidade de Santiago de Compostela
R. F. Casten - Yale University
J. Gerl - GSI Darmstadt, D-64291 Darmstadt, Germany
H. J. Wollersheim - GSI Darmstadt, D-64291 Darmstadt, Germany
J. Grebosz - Henryk Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
G. Farrelly - University of Surrey
M. Gorska - GSI Darmstadt, D-64291 Darmstadt, Germany
I. Kojouharov - GSI Darmstadt, D-64291 Darmstadt, Germany
H. Schaffner - GSI Darmstadt, D-64291 Darmstadt, Germany
A. Algora - Universitat de València
G. Benzoni - University of Milan
A. Blazhev - University of Cologne
P. Boutachkov - GSI Darmstadt, D-64291 Darmstadt, Germany
A. M. Bruce - University of Brighton
A. M. Denis Bacelar - University of Brighton
I. J. Cullen - University of Surrey
L. Caceres - GSI Darmstadt, D-64291 Darmstadt, Germany
P. Doornenbal - GSI Darmstadt, D-64291 Darmstadt, Germany
M. E. Estevez - Universidade de Santiago de Compostela
Y. Fujita - Osaka University
W. Gelletly - University of Surrey
R. Hoischen - GSI Darmstadt, D-64291 Darmstadt, Germany
R. Kumar - IUAC, New Delhi, India
N. Kurz - GSI Darmstadt, D-64291 Darmstadt, Germany
S. Lalkovski - University of Brighton
Z. Liu - University of Edinburgh
C. Mihai - Horia Hulubei Natl Inst Phys & Nucl Engn, R-76900 Bucharest, Romania
F. Molina - Universitat de València
A. I. Morales - Universidade de Santiago de Compostela
D. Muecher - University of Cologne
W. Prokopowicz - GSI Darmstadt, D-64291 Darmstadt, Germany
B. Rubio - Universitat de València
Y. Shi - Peking University
A. Tamii - Osaka University
S. Tashenov - GSI Darmstadt, D-64291 Darmstadt, Germany
J. J. Valiente-Dobon - Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy
P. M. Walker - University of Surrey
P. J. Woods - University of Edinburgh
F. R. Xu - Peking University
Publication Details: Physical review. C, Nuclear physics, Vol.80(6)
Publisher: Amer Physical Soc
Number of pages: 12
Grant note: Spanish Ministerio de Educacion y Ciencia; Spanish Government ST/F012128/1; EP/D072018/1; ST/F012012/1; ST/F500572/1 / Science and Technology Facilities Council; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) Italian INFN; Istituto Nazionale di Fisica Nucleare (INFN) Hungarian Science Foundation; Orszagos Tudomanyos Kutatasi Alapprogramok (OTKA) EPSRC/STFC (UK); UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC); Engineering & Physical Sciences Research Council (EPSRC) Bulgarian Science Fund; National Science Fund of Bulgaria Swedish Research Council; Swedish Research Council for Health Working Life & Welfare (Forte); Swedish Research Council Formas EP/D072018/1; ST/F012012/1; ST/F500572/1 / STFC; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) 06KY205I / German BMBF; Federal Ministry of Education & Research (BMBF) DE-FG02-91ER40609 / US Department of Energy; United States Department of Energy (DOE) 506065 / EU (EURONS); European Commission ID-180 / CNCSIS; Consiliul National al Cercetarii Stiintifice (CNCS) Polish Ministry of Science and Higher Education; Ministry of Science and Higher Education, Poland
Identifiers: 9918733308331
Academic Unit: King Abdulaziz City for Science & Technology; King Abdulaziz University
Language: English
Resource Type: Journal article