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Prolate shape of Ba...
Prolate shape of Ba-140 from a first combined Doppler-shift and Coulomb-excitation measurement at the REX-ISOLDE facility
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Bauer, C. (author)
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Behrens, T. (author)
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Bildstein, V. (author)
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Blazhev, A. (author)
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Bruyneel, B. (author)
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Butterworth, J. (author)
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Clement, E. (author)
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Coquard, L. (author)
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Egido, J. L. (author)
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- Ekström, Andreas (author)
- Lund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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Fitzpatrick, C. R. (author)
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Fransen, C. (author)
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Gernhaeuser, R. (author)
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Habs, D. (author)
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Hess, H. (author)
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Leske, J. (author)
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Kroell, T. (author)
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Kruecken, R. (author)
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Lutter, R. (author)
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Marley, P. (author)
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Moeller, T. (author)
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Otsuka, T. (author)
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Patronis, N. (author)
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Petts, A. (author)
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Pietralla, N. (author)
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Rodriguez, T. R. (author)
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Shimizu, N. (author)
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Stahl, C. (author)
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Stefanescu, I. (author)
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Stora, T. (author)
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Thirolf, P. G. (author)
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Voulot, D. (author)
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de Walle, J. Van (author)
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Warr, N. (author)
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Wenander, F. (author)
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Wiens, A. (author)
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(creator_code:org_t)
- 2012
- 2012
- English.
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In: Physical Review C (Nuclear Physics). - 0556-2813. ; 86:3
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http://dx.doi.org/10...
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https://doi.org/10.1...
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Abstract
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- Background: Quadrupole moments of excited nuclear states are important observables for geometrically interpreting nuclear structure in terms of deformed shapes, although data are scarce and sometimes ambiguous, in particular, in neutron-rich nuclides. Purpose: A measurement was performed for determining the spectroscopic quadrupole moment of the 2(1)(+) state of Ba-140 in order to clarify the character of quadrupole deformation (prolate or oblate) of the state in its yrast sequence of levels. Method: We have utilized a new combined technique of lifetime measurement at REX-ISOLDE and MINIBALL using the Doppler-shift attenuation method (DSAM) and a reorientation analysis of Coulomb-excitation yields. Results: On the basis of the new lifetime of tau(2(1)(+)) = 10.4(-0.8)(+2.2) ps the electric quadrupole moment was determined to be Q(2(1)(+)) = -0.52(34) eb, indicating a predominant prolate deformation. Conclusions: This finding is in agreement with beyond-mean-field calculations using the Gogny D1S force and with results from the Monte Carlo shell-model approach.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Bauer, C.
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Behrens, T.
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Bildstein, V.
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Blazhev, A.
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Bruyneel, B.
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Butterworth, J.
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show more...
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Clement, E.
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Coquard, L.
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Egido, J. L.
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Ekström, Andreas
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Fitzpatrick, C. ...
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Fransen, C.
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Gernhaeuser, R.
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Habs, D.
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Hess, H.
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Leske, J.
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Kroell, T.
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Kruecken, R.
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Lutter, R.
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Marley, P.
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Moeller, T.
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Otsuka, T.
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Patronis, N.
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Petts, A.
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Pietralla, N.
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Rodriguez, T. R.
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Shimizu, N.
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Stahl, C.
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Stefanescu, I.
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Stora, T.
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Thirolf, P. G.
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Voulot, D.
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de Walle, J. Van
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Warr, N.
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Wenander, F.
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Wiens, A.
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show less...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Subatomic Physic ...
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Physical Review ...
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Lund University