Singh, Purnima, Korten, W., Hagen, T. W., Gorgen, A., Grente, L., Salsac, M-D, Farget, F., Clement, E., de France, G., Braunroth, T., Bruyneel, B., Celikovic, I, Delaune, O., Dewald, A., Dijon, A., Delaroche, J-P, Girod, M., Hackstein, M., Jacquot, B., Libert, J., Litzinger, J., Ljungvall, J., Louchart, C., Gottardo, A., Michelagnoli, C., Mueller-Gatermann, C., Napoli, D. R., Otsuka, T., Pillet, N., Recchia, F., Rother, W., Sahin, E., Siem, S., Sulignano, B., Togashi, T., Tsunoda, Y., Theisen, Ch and Valiente-Dobon, J. J. (2018). Evidence for Coexisting Shapes through Lifetime Measurements in Zr-98. Phys. Rev. Lett., 121 (19). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

The lifetimes of the first excited 2(+), 4(+), and 6(+) states in Zr-98 were measured with the recoil-distance Doppler shift method in an experiment performed at GANIL. Excited states in Zr-98 were populated using the fission reaction between a 6.2 MeV/u U-238 beam and a Be-9 target. The gamma rays were detected with the EXOGAM array in correlation with the fission fragments identified by mass and atomic number in the VAMOS++ spectrometer. Our result shows a very small B(E2; 2(1)(+) -> 0(1)(+)) value in Zr-98, thereby confirming the very sudden onset of collectivity at N = 60. The experimenta(l) results are compared to large-scale Monte Carlo shell model and beyond-mean-field calculations. The present results indicate the coexistence of two additional deformed shapes in this nucleus along with the spherical ground State.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Singh, PurnimaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Korten, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hagen, T. W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gorgen, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Grente, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Salsac, M-DUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Farget, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Clement, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
de France, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Braunroth, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bruyneel, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Celikovic, IUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Delaune, O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dewald, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dijon, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Delaroche, J-PUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Girod, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hackstein, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jacquot, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Libert, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Litzinger, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ljungvall, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Louchart, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gottardo, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Michelagnoli, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mueller-Gatermann, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Napoli, D. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Otsuka, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pillet, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Recchia, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rother, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sahin, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Siem, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sulignano, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Togashi, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tsunoda, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Theisen, ChUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Valiente-Dobon, J. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-165870
DOI: 10.1103/PhysRevLett.121.192501
Journal or Publication Title: Phys. Rev. Lett.
Volume: 121
Number: 19
Date: 2018
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 1079-7114
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
NEUTRON-RICH; FISSION FRAGMENTS; CHARGE RADII; STATES; ISOTOPES; ZR; SPECTROMETER; PERFORMANCE; EVOLUTION; NUCLEIMultiple languages
Physics, MultidisciplinaryMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/16587

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