Shape coexistence and isomeric states in neutron-rich 112Tc and 113Tc

Bruce, A.M., Lalkovski, S., Denis-Bacelar, A.M., Gorska, M., Pietri, S., Podolyák, Z., Shi, Y., Walker, P.M., Xu, F.R., Bednarczyk, P., Caceres, L., Caserejos, E., Cullen, I.J., Doornenbal, P., Farrelly, G.F., Garnsworthy, A.B., Geissel, H., Gelletly, W., Gerl, J., Grebosz, J., Hinke, C., Ilie, G., Jaworski, G., Kojouharov, I., Kurz, N., Myalski, S., Palacz, M., Prokopowicz, W., Regan, P.H., Schaffner, H., Steer, S., Tashenov, S. and Wollersheim, H.J. (2010) Shape coexistence and isomeric states in neutron-rich 112Tc and 113Tc Physical Review C, 82 (4). ISSN 1089-490X

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Abstract

Isomeric states in 112Tc and 113Tc, with half-lives of 150 (17) ns and 500 (100) ns respectively, have been observed following the relativistic fission of 238U. The fission fragments have been separated in a fragment separator and identified by means of energy loss and time-of-flight techniques. In both nuclei, the ground-state configuration is calculated to have an oblate shape and the isomerism is proposed to arise due to transitions from a triaxial excited state to a low-lying oblate state.

Item Type:Journal article
Subjects:F000 Physical Sciences > F300 Physics
DOI (a stable link to the resource):10.1103/PhysRevC.82.044312
Faculties:Faculty of Science and Engineering > School of Computing, Engineering and Mathematics > Engineering and Product Design Research > Nuclear Physics
Faculty of Science and Engineering
Faculty of Science and Engineering > School of Computing, Engineering and Mathematics
ID Code:7805
Deposited By:editor engineering
Deposited On:11 Nov 2010 11:11
Last Modified:21 May 2012 12:30

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