Bauer, C., Behrens, T., Bildstein, V., Blazhev, A., Bruyneel, B., Butterworth, J., Clement, E., Coquard, L., Egido, J. L., Ekstrom, A., Fitzpatrick, C. R., Fransen, C., Gernhaeuser, R., Habs, D., Hess, H., Leske, J., Kroell, T., Kruecken, R., Lutter, R., Marley, P., Moeller, T., Otsuka, T., Patronis, N., Petts, A., Pietralla, N., Rodriguez, T. R., Shimizu, N., Stahl, C., Stefanescu, I., Stora, T., Thirolf, P. G., Voulot, D., de Walle, J. Van, Warr, N., Wenander, F. and Wiens, A. (2012). Prolate shape of Ba-140 from a first combined Doppler-shift and Coulomb-excitation measurement at the REX-ISOLDE facility. Phys. Rev. C, 86 (3). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1089-490X

Full text not available from this repository.

Abstract

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.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Bauer, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Behrens, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bildstein, V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Blazhev, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bruyneel, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Butterworth, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Clement, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Coquard, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Egido, J. L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ekstrom, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fitzpatrick, C. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fransen, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gernhaeuser, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Habs, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hess, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Leske, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kroell, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kruecken, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lutter, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Marley, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Moeller, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Otsuka, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Patronis, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Petts, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pietralla, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rodriguez, T. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shimizu, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stahl, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stefanescu, I.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stora, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Thirolf, P. G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Voulot, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
de Walle, J. VanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Warr, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wenander, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wiens, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-483170
DOI: 10.1103/PhysRevC.86.034310
Journal or Publication Title: Phys. Rev. C
Volume: 86
Number: 3
Date: 2012
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 1089-490X
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
QUADRUPOLE-MOMENTS; NUCLEI; SHELL; STATEMultiple languages
Physics, NuclearMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/48317

Downloads

Downloads per month over past year

Altmetric

Export

Actions (login required)

View Item View Item