Half-life of the yrast 2 + state in 188W: evolution of deformation and collectivity in neutron-rich tungsten isotopes

P.J.R. Mason, Zs. Podolyak, N. Mărginean, P.H. Regan, P.D. Stevenson, V. Werner, T. Alexander, A. Algora, T. Alharbi, M. Bowry, R. Britton, Alison Bruce, D. Bucurescu, M.R. Bunce, G. Căta-Danil, I. Căta-Danil, N. Cooper, D. Deleanu, D. Delion, D. FilipescuW. Gelletly, D. Ghită, I. Gheorghe, T. Glodariu, G. Ilie, D. Ivanova, S. Kisyov, S. Lalkovski, R. Lica, S. Liddick, R. Mărginean, C. Mihai, K. Mulholland, Cristina Nita, A. Negret, S. Pascu, S. Rice, Oliver Roberts, T. Sava, J.F. Smith, P.-A. Söderström, L. Stroe, G. Suliman, R. Suvaila, S. Toma, C. Townsley, E. Wilson, R.T. Wood, M. Zhekova, C. Zhou

Research output: Contribution to journalArticle

Abstract

The half-life of the yrast Iπ=2+ state in the neutron-rich nucleus 188W has been measured using fast-timing techniques with the HPGe and LaBr3:Ce array at the National Institute of Physics and Nuclear Engineering, Bucharest. The resulting value of t1/2=0.87(12) ns is equivalent to a reduced transition probability of B(E2;21+→01+)=85(12) W.u. for this transition. The B(E2;21+→01+) is compared to neighboring tungsten isotopes and nuclei in the Hf, Os, and Pt isotopic chains. Woods-Saxon potential energy surface (PES) calculations have been performed for nuclei in the tungsten isotopic chain and predict prolate deformed minima with rapidly increasing γ softness for 184-192W and an oblate minimum for 194W.
Original languageEnglish
JournalPhysical Review C
Volume88
Issue number4
DOIs
Publication statusPublished - 2 Oct 2013

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tungsten isotopes
half life
neutrons
nuclei
softness
transition probabilities
tungsten
potential energy
time measurement
engineering
physics

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Mason, P. J. R., Podolyak, Z., Mărginean, N., Regan, P. H., Stevenson, P. D., Werner, V., ... Zhou, C. (2013). Half-life of the yrast 2 + state in 188W: evolution of deformation and collectivity in neutron-rich tungsten isotopes. Physical Review C, 88(4). https://doi.org/10.1103/PhysRevC.88.044301
Mason, P.J.R. ; Podolyak, Zs. ; Mărginean, N. ; Regan, P.H. ; Stevenson, P.D. ; Werner, V. ; Alexander, T. ; Algora, A. ; Alharbi, T. ; Bowry, M. ; Britton, R. ; Bruce, Alison ; Bucurescu, D. ; Bunce, M.R. ; Căta-Danil, G. ; Căta-Danil, I. ; Cooper, N. ; Deleanu, D. ; Delion, D. ; Filipescu, D. ; Gelletly, W. ; Ghită, D. ; Gheorghe, I. ; Glodariu, T. ; Ilie, G. ; Ivanova, D. ; Kisyov, S. ; Lalkovski, S. ; Lica, R. ; Liddick, S. ; Mărginean, R. ; Mihai, C. ; Mulholland, K. ; Nita, Cristina ; Negret, A. ; Pascu, S. ; Rice, S. ; Roberts, Oliver ; Sava, T. ; Smith, J.F. ; Söderström, P.-A. ; Stroe, L. ; Suliman, G. ; Suvaila, R. ; Toma, S. ; Townsley, C. ; Wilson, E. ; Wood, R.T. ; Zhekova, M. ; Zhou, C. / Half-life of the yrast 2 + state in 188W: evolution of deformation and collectivity in neutron-rich tungsten isotopes. In: Physical Review C. 2013 ; Vol. 88, No. 4.
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title = "Half-life of the yrast 2 + state in 188W: evolution of deformation and collectivity in neutron-rich tungsten isotopes",
abstract = "The half-life of the yrast Iπ=2+ state in the neutron-rich nucleus 188W has been measured using fast-timing techniques with the HPGe and LaBr3:Ce array at the National Institute of Physics and Nuclear Engineering, Bucharest. The resulting value of t1/2=0.87(12) ns is equivalent to a reduced transition probability of B(E2;21+→01+)=85(12) W.u. for this transition. The B(E2;21+→01+) is compared to neighboring tungsten isotopes and nuclei in the Hf, Os, and Pt isotopic chains. Woods-Saxon potential energy surface (PES) calculations have been performed for nuclei in the tungsten isotopic chain and predict prolate deformed minima with rapidly increasing γ softness for 184-192W and an oblate minimum for 194W.",
author = "P.J.R. Mason and Zs. Podolyak and N. Mărginean and P.H. Regan and P.D. Stevenson and V. Werner and T. Alexander and A. Algora and T. Alharbi and M. Bowry and R. Britton and Alison Bruce and D. Bucurescu and M.R. Bunce and G. Căta-Danil and I. Căta-Danil and N. Cooper and D. Deleanu and D. Delion and D. Filipescu and W. Gelletly and D. Ghită and I. Gheorghe and T. Glodariu and G. Ilie and D. Ivanova and S. Kisyov and S. Lalkovski and R. Lica and S. Liddick and R. Mărginean and C. Mihai and K. Mulholland and Cristina Nita and A. Negret and S. Pascu and S. Rice and Oliver Roberts and T. Sava and J.F. Smith and P.-A. S{\"o}derstr{\"o}m and L. Stroe and G. Suliman and R. Suvaila and S. Toma and C. Townsley and E. Wilson and R.T. Wood and M. Zhekova and C. Zhou",
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language = "English",
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Mason, PJR, Podolyak, Z, Mărginean, N, Regan, PH, Stevenson, PD, Werner, V, Alexander, T, Algora, A, Alharbi, T, Bowry, M, Britton, R, Bruce, A, Bucurescu, D, Bunce, MR, Căta-Danil, G, Căta-Danil, I, Cooper, N, Deleanu, D, Delion, D, Filipescu, D, Gelletly, W, Ghită, D, Gheorghe, I, Glodariu, T, Ilie, G, Ivanova, D, Kisyov, S, Lalkovski, S, Lica, R, Liddick, S, Mărginean, R, Mihai, C, Mulholland, K, Nita, C, Negret, A, Pascu, S, Rice, S, Roberts, O, Sava, T, Smith, JF, Söderström, P-A, Stroe, L, Suliman, G, Suvaila, R, Toma, S, Townsley, C, Wilson, E, Wood, RT, Zhekova, M & Zhou, C 2013, 'Half-life of the yrast 2 + state in 188W: evolution of deformation and collectivity in neutron-rich tungsten isotopes', Physical Review C, vol. 88, no. 4. https://doi.org/10.1103/PhysRevC.88.044301

Half-life of the yrast 2 + state in 188W: evolution of deformation and collectivity in neutron-rich tungsten isotopes. / Mason, P.J.R.; Podolyak, Zs.; Mărginean, N.; Regan, P.H.; Stevenson, P.D.; Werner, V.; Alexander, T.; Algora, A.; Alharbi, T.; Bowry, M.; Britton, R.; Bruce, Alison; Bucurescu, D.; Bunce, M.R.; Căta-Danil, G.; Căta-Danil, I.; Cooper, N.; Deleanu, D.; Delion, D.; Filipescu, D.; Gelletly, W.; Ghită, D.; Gheorghe, I.; Glodariu, T.; Ilie, G.; Ivanova, D.; Kisyov, S.; Lalkovski, S.; Lica, R.; Liddick, S.; Mărginean, R.; Mihai, C.; Mulholland, K.; Nita, Cristina; Negret, A.; Pascu, S.; Rice, S.; Roberts, Oliver; Sava, T.; Smith, J.F.; Söderström, P.-A.; Stroe, L.; Suliman, G.; Suvaila, R.; Toma, S.; Townsley, C.; Wilson, E.; Wood, R.T.; Zhekova, M.; Zhou, C.

In: Physical Review C, Vol. 88, No. 4, 02.10.2013.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Half-life of the yrast 2 + state in 188W: evolution of deformation and collectivity in neutron-rich tungsten isotopes

AU - Mason, P.J.R.

AU - Podolyak, Zs.

AU - Mărginean, N.

AU - Regan, P.H.

AU - Stevenson, P.D.

AU - Werner, V.

AU - Alexander, T.

AU - Algora, A.

AU - Alharbi, T.

AU - Bowry, M.

AU - Britton, R.

AU - Bruce, Alison

AU - Bucurescu, D.

AU - Bunce, M.R.

AU - Căta-Danil, G.

AU - Căta-Danil, I.

AU - Cooper, N.

AU - Deleanu, D.

AU - Delion, D.

AU - Filipescu, D.

AU - Gelletly, W.

AU - Ghită, D.

AU - Gheorghe, I.

AU - Glodariu, T.

AU - Ilie, G.

AU - Ivanova, D.

AU - Kisyov, S.

AU - Lalkovski, S.

AU - Lica, R.

AU - Liddick, S.

AU - Mărginean, R.

AU - Mihai, C.

AU - Mulholland, K.

AU - Nita, Cristina

AU - Negret, A.

AU - Pascu, S.

AU - Rice, S.

AU - Roberts, Oliver

AU - Sava, T.

AU - Smith, J.F.

AU - Söderström, P.-A.

AU - Stroe, L.

AU - Suliman, G.

AU - Suvaila, R.

AU - Toma, S.

AU - Townsley, C.

AU - Wilson, E.

AU - Wood, R.T.

AU - Zhekova, M.

AU - Zhou, C.

PY - 2013/10/2

Y1 - 2013/10/2

N2 - The half-life of the yrast Iπ=2+ state in the neutron-rich nucleus 188W has been measured using fast-timing techniques with the HPGe and LaBr3:Ce array at the National Institute of Physics and Nuclear Engineering, Bucharest. The resulting value of t1/2=0.87(12) ns is equivalent to a reduced transition probability of B(E2;21+→01+)=85(12) W.u. for this transition. The B(E2;21+→01+) is compared to neighboring tungsten isotopes and nuclei in the Hf, Os, and Pt isotopic chains. Woods-Saxon potential energy surface (PES) calculations have been performed for nuclei in the tungsten isotopic chain and predict prolate deformed minima with rapidly increasing γ softness for 184-192W and an oblate minimum for 194W.

AB - The half-life of the yrast Iπ=2+ state in the neutron-rich nucleus 188W has been measured using fast-timing techniques with the HPGe and LaBr3:Ce array at the National Institute of Physics and Nuclear Engineering, Bucharest. The resulting value of t1/2=0.87(12) ns is equivalent to a reduced transition probability of B(E2;21+→01+)=85(12) W.u. for this transition. The B(E2;21+→01+) is compared to neighboring tungsten isotopes and nuclei in the Hf, Os, and Pt isotopic chains. Woods-Saxon potential energy surface (PES) calculations have been performed for nuclei in the tungsten isotopic chain and predict prolate deformed minima with rapidly increasing γ softness for 184-192W and an oblate minimum for 194W.

U2 - 10.1103/PhysRevC.88.044301

DO - 10.1103/PhysRevC.88.044301

M3 - Article

VL - 88

JO - Physical Review C

JF - Physical Review C

SN - 0556-2813

IS - 4

ER -