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

Alison Bruce, S. Lalkovski, A.M. Denis-Bacelar, M. Gorska, S. Pietri, Z. Podolyák, Y. Shi, P.M. Walker, F.R. Xu, P. Bednarczyk, L. Caceres, E. Caserejos, I.J. Cullen, P. Doornenbal, G.F. Farrelly, A.B. Garnsworthy, H. Geissel, W. Gelletly, J. Gerl, J. GreboszC. Hinke, G. Ilie, G. Jaworski, I. Kojouharov, N. Kurz, S. Myalski, M. Palacz, W. Prokopowicz, P.H. Regan, H. Schaffner, S. Steer, S. Tashenov, H.J. Wollersheim

Research output: Contribution to journalArticle

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.
Original languageEnglish
JournalPhysical Review C
Volume82
Issue number4
Publication statusPublished - 14 Oct 2010

Fingerprint Dive into the research topics of 'Shape coexistence and isomeric states in neutron-rich 112Tc and 113Tc'. Together they form a unique fingerprint.

  • Cite this

    Bruce, A., 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., ... Wollersheim, H. J. (2010). Shape coexistence and isomeric states in neutron-rich 112Tc and 113Tc. Physical Review C, 82(4).