β - Dcopy of neutron-rich tantalum nuclei: Shape evolution in neutron-rich tungsten isotopes

N. Alkhomashi; P. H. Regan; Zs Podolyák; 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. Górska; I. Kojouharov; H. Schaffner; A. Algora; G. Benzoni; A. Blazhev; P. Boutachkov; A. M. Bruce; A. M.Denis Bacelar; I. J. Cullen; L. Cáceres; 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. Mücher; W. Prokopowicz; B. Rubio; Y. Shi; A. Tamii; S. Tashenov; J. J. Valiente-Dobón; P. M. Walker; P. J. Woods; F. R. Xu

doi:10.1103/PhysRevC.80.064308

β - Dcopy of neutron-rich tantalum nuclei: Shape evolution in neutron-rich tungsten isotopes

N. Alkhomashi^*
, P. H. Regan
, Zs Podolyák
, 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. Górska
, I. Kojouharov
, H. Schaffner
, A. Algora
, G. Benzoni
, A. Blazhev
, P. Boutachkov

A. M. Bruce, A. M.Denis Bacelar, I. J. Cullen, L. Cáceres, 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. Mücher, W. Prokopowicz, B. Rubio, Y. Shi, A. Tamii, S. Tashenov, J. J. Valiente-Dobón, P. M. Walker, P. J. Woods, F. R. Xu

^*Corresponding author for this work

University of Surrey
University of Santiago de Compostela
Yale University
GSI Helmholtz Centre for Heavy Ion Research
Polish Academy of Science
University of Valencia
Institute for Nuclear Research
University of Milan
University of Cologne
University of Brighton
The University of Osaka
Lund University
IUAC
University of Edinburgh
Horia Hulubei National Institute of Physics and Nuclear Engineering
Peking University
Laboratori Nazionali di Legnaro

Research output: Contribution to journal › Article › peer-review

67 Scopus citations

Abstract

The low-lying structure of W188,190,192 has been studied following β decays of the neutron-rich mother nuclei Ta188,190,192 produced following the projectile fragmentation of a 1-GeV-per-nucleon Pb208 primary beam on a natural beryllium target at the GSI Fragment Separator. The β-decay half-lives of Ta188, Ta190, and Ta192 have been measured, with γ-ray decays of low-lying states in their respective W daughter nuclei, using heavy-ion β-γ correlations and a position-sensitive silicon detector setup. The data provide information on the low-lying excited states in W188, W190, and W192, which highlight a change in nuclear shape at W190 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~ 190 region and is consistent with maximization of the γ-softness of the nuclear potential around N~116.

Original language	English
Article number	064308
Journal	Physical Review C - Nuclear Physics
Volume	80
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.80.064308
State	Published - 8 Dec 2009
Externally published	Yes

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10.1103/PhysRevC.80.064308

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Alkhomashi, N., Regan, P. H., Podolyák, Z., Pietri, S., Garnsworthy, A. B., Steer, S. J., Benlliure, J., Caserejos, E., Casten, R. F., Gerl, J., Wollersheim, H. J., Grebosz, J., Farrelly, G., Górska, M., Kojouharov, I., Schaffner, H., Algora, A., Benzoni, G., Blazhev, A., ... Xu, F. R. (2009). β - Dcopy of neutron-rich tantalum nuclei: Shape evolution in neutron-rich tungsten isotopes. Physical Review C - Nuclear Physics, 80(6), Article 064308. https://doi.org/10.1103/PhysRevC.80.064308

@article{244adbbf92de4b34affeaebc09b08c2e,

title = "β - Dcopy of neutron-rich tantalum nuclei: Shape evolution in neutron-rich tungsten isotopes",

abstract = "The low-lying structure of W188,190,192 has been studied following β decays of the neutron-rich mother nuclei Ta188,190,192 produced following the projectile fragmentation of a 1-GeV-per-nucleon Pb208 primary beam on a natural beryllium target at the GSI Fragment Separator. The β-decay half-lives of Ta188, Ta190, and Ta192 have been measured, with γ-ray decays of low-lying states in their respective W daughter nuclei, using heavy-ion β-γ correlations and a position-sensitive silicon detector setup. The data provide information on the low-lying excited states in W188, W190, and W192, which highlight a change in nuclear shape at W190 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\textasciitilde{} 190 region and is consistent with maximization of the γ-softness of the nuclear potential around N\textasciitilde{}116.",

author = "N. Alkhomashi and Regan, \{P. H.\} and Zs Podoly{\'a}k and S. Pietri and Garnsworthy, \{A. B.\} and Steer, \{S. J.\} and J. Benlliure and E. Caserejos and Casten, \{R. F.\} and J. Gerl and Wollersheim, \{H. J.\} and J. Grebosz and G. Farrelly and M. G{\'o}rska and I. Kojouharov and H. Schaffner and A. Algora and G. Benzoni and A. Blazhev and P. Boutachkov and Bruce, \{A. M.\} and Bacelar, \{A. M.Denis\} and Cullen, \{I. J.\} and L. C{\'a}ceres and P. Doornenbal and Estevez, \{M. E.\} and Y. Fujita and W. Gelletly and R. Hoischen and R. Kumar and N. Kurz and S. Lalkovski and Z. Liu and C. Mihai and F. Molina and Morales, \{A. I.\} and D. M{\"u}cher and W. Prokopowicz and B. Rubio and Y. Shi and A. Tamii and S. Tashenov and Valiente-Dob{\'o}n, \{J. J.\} and Walker, \{P. M.\} and Woods, \{P. J.\} and Xu, \{F. R.\}",

year = "2009",

month = dec,

day = "8",

doi = "10.1103/PhysRevC.80.064308",

language = "英语",

volume = "80",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "6",

}

Alkhomashi, N, Regan, PH, Podolyák, Z, Pietri, S, Garnsworthy, AB, Steer, SJ, Benlliure, J, Caserejos, E, Casten, RF, Gerl, J, Wollersheim, HJ, Grebosz, J, Farrelly, G, Górska, M, Kojouharov, I, Schaffner, H, Algora, A, Benzoni, G, Blazhev, A, Boutachkov, P, Bruce, AM, Bacelar, AMD, Cullen, IJ, Cáceres, L, Doornenbal, P, Estevez, ME, Fujita, Y, Gelletly, W, Hoischen, R, Kumar, R, Kurz, N, Lalkovski, S, Liu, Z, Mihai, C, Molina, F, Morales, AI, Mücher, D, Prokopowicz, W, Rubio, B, Shi, Y, Tamii, A, Tashenov, S, Valiente-Dobón, JJ, Walker, PM, Woods, PJ & Xu, FR 2009, 'β - Dcopy of neutron-rich tantalum nuclei: Shape evolution in neutron-rich tungsten isotopes', Physical Review C - Nuclear Physics, vol. 80, no. 6, 064308. https://doi.org/10.1103/PhysRevC.80.064308

TY - JOUR

T1 - β - Dcopy of neutron-rich tantalum nuclei

T2 - Shape evolution in neutron-rich tungsten isotopes

AU - Alkhomashi, N.

AU - Regan, P. H.

AU - Podolyák, Zs

AU - Pietri, S.

AU - Garnsworthy, A. B.

AU - Steer, S. J.

AU - Benlliure, J.

AU - Caserejos, E.

AU - Casten, R. F.

AU - Gerl, J.

AU - Wollersheim, H. J.

AU - Grebosz, J.

AU - Farrelly, G.

AU - Górska, M.

AU - Kojouharov, I.

AU - Schaffner, H.

AU - Algora, A.

AU - Benzoni, G.

AU - Blazhev, A.

AU - Boutachkov, P.

AU - Bruce, A. M.

AU - Bacelar, A. M.Denis

AU - Cullen, I. J.

AU - Cáceres, L.

AU - Doornenbal, P.

AU - Estevez, M. E.

AU - Fujita, Y.

AU - Gelletly, W.

AU - Hoischen, R.

AU - Kumar, R.

AU - Kurz, N.

AU - Lalkovski, S.

AU - Liu, Z.

AU - Mihai, C.

AU - Molina, F.

AU - Morales, A. I.

AU - Mücher, D.

AU - Prokopowicz, W.

AU - Rubio, B.

AU - Shi, Y.

AU - Tamii, A.

AU - Tashenov, S.

AU - Valiente-Dobón, J. J.

AU - Walker, P. M.

AU - Woods, P. J.

AU - Xu, F. R.

PY - 2009/12/8

Y1 - 2009/12/8

N2 - The low-lying structure of W188,190,192 has been studied following β decays of the neutron-rich mother nuclei Ta188,190,192 produced following the projectile fragmentation of a 1-GeV-per-nucleon Pb208 primary beam on a natural beryllium target at the GSI Fragment Separator. The β-decay half-lives of Ta188, Ta190, and Ta192 have been measured, with γ-ray decays of low-lying states in their respective W daughter nuclei, using heavy-ion β-γ correlations and a position-sensitive silicon detector setup. The data provide information on the low-lying excited states in W188, W190, and W192, which highlight a change in nuclear shape at W190 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~ 190 region and is consistent with maximization of the γ-softness of the nuclear potential around N~116.

AB - The low-lying structure of W188,190,192 has been studied following β decays of the neutron-rich mother nuclei Ta188,190,192 produced following the projectile fragmentation of a 1-GeV-per-nucleon Pb208 primary beam on a natural beryllium target at the GSI Fragment Separator. The β-decay half-lives of Ta188, Ta190, and Ta192 have been measured, with γ-ray decays of low-lying states in their respective W daughter nuclei, using heavy-ion β-γ correlations and a position-sensitive silicon detector setup. The data provide information on the low-lying excited states in W188, W190, and W192, which highlight a change in nuclear shape at W190 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~ 190 region and is consistent with maximization of the γ-softness of the nuclear potential around N~116.

UR - https://www.scopus.com/pages/publications/73649102812

U2 - 10.1103/PhysRevC.80.064308

DO - 10.1103/PhysRevC.80.064308

M3 - 文章

AN - SCOPUS:73649102812

SN - 0556-2813

VL - 80

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 6

M1 - 064308

ER -

β - Dcopy of neutron-rich tantalum nuclei: Shape evolution in neutron-rich tungsten isotopes

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