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

Mason, PJR, Podolyak, Zsolt, Marginean, N, Regan, Patrick, Stevenson, Paul, Werner, V, Alexander, T, Algora, A, Alharbi, T, Bowry, M , Britton, R, Bruce, AM, Bucurescu, D, Bunce, M, Cata-Danil, G, Cata-Danil, I, Cooper, N, Deleanu, D, Delion, D, Filipescu, D, Gelletly, William, Ghita, D, Gheorghe, I, Glodariu, T, Ilie, G, Ivanova, D, Kisyov, S, Lalkovski, S, Lica, R, Liddick, SN, Marginean, R, Mihai, C, Mulholland, K, Nita, CR, Negret, A, Pascu, S, Rice, S, Roberts, OJ, Sava, T, Smith, JF, Soederstroem, P-A, Stroe, L, Suliman, G, Suvaila, R, Toma, S, Townsley, C, Wilson, E, Wood, Rachael, Zhekova, M and Zhou, C (2013) Half-life of the yrast 2(+) state in W-188: Evolution of deformation and collectivity in neutron-rich tungsten isotopes PHYSICAL REVIEW C, 88 (4), 044301.

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Abstract

The half-life of the yrast I π = 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; 2+ 1 → 0+ 1 ) = 85(12) W.u. for this transition. The B(E2; 2+ 1 → 0+ 1 ) 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.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Mason, PJR
Podolyak, ZsoltZ.Podolyak@surrey.ac.uk
Marginean, N
Regan, PatrickP.Regan@surrey.ac.uk
Stevenson, PaulP.Stevenson@surrey.ac.uk
Werner, V
Alexander, T
Algora, A
Alharbi, T
Bowry, M
Britton, R
Bruce, AM
Bucurescu, D
Bunce, M
Cata-Danil, G
Cata-Danil, I
Cooper, N
Deleanu, D
Delion, D
Filipescu, D
Gelletly, WilliamW.Gelletly@surrey.ac.uk
Ghita, D
Gheorghe, I
Glodariu, T
Ilie, G
Ivanova, D
Kisyov, S
Lalkovski, S
Lica, R
Liddick, SN
Marginean, R
Mihai, C
Mulholland, K
Nita, CR
Negret, A
Pascu, S
Rice, S
Roberts, OJ
Sava, T
Smith, JF
Soederstroem, P-A
Stroe, L
Suliman, G
Suvaila, R
Toma, S
Townsley, C
Wilson, E
Wood, Rachaelr.t.wood@surrey.ac.uk
Zhekova, M
Zhou, C
Date : 2 October 2013
Identification Number : 10.1103/PhysRevC.88.044301
Copyright Disclaimer : Copyright 2013 American Physical Society
Uncontrolled Keywords : Science & Technology, Physical Sciences, Physics, Nuclear, Physics, PHYSICS, NUCLEAR, NUCLEAR-DATA SHEETS, DETECTORS
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 29 Nov 2013 11:56
Last Modified : 31 Oct 2017 16:29
URI: http://epubs.surrey.ac.uk/id/eprint/804641

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