EPJ Web Conf.
Volume 193, 20186th Workshop on Nuclear Fission and Spectroscopy of Neutron-Rich Nuclei (FISSION 2017)
|Number of page(s)||6|
|Section||Spectroscopy of Neutron-Rich Nuclei|
|Published online||14 November 2018|
Fast-timing measurements in neutron-rich odd-mass zirconium isotopes using LaBr3:Ce detectors coupled with Gammasphere
School of Computing, Engineering and Mathematics, University of Brighton, Brighton BN2 4JG, UK
2 Department of Physics, University of Surrey, Guildford GU2 7XH, UK
3 Department of Nuclear Engineering, Faculty of Physics, University of Sofia "St. Kl. Ohridski", Sofia 1164, Bulgaria
4 Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
5 STFC Daresbury Laboratory, Daresbury, Warrington WA4 4AD, UK
6 Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854, USA
7 Grupo de Física Nuclear, Universidad Complutense, CEI Moncloa, ES-28040 Madrid, Spain
8 SChool of Physics and AStronomy, University of Manchester, Manchester M13 9PL, UK
9 Department of Physics, U.S. Naval Academy, Annapolis, Maryland 21402, USA
10 Institut für Kernphysik, TU Darmstadt, Schlossgartenstrasse 9, 64289 Darmstadt, Germany
11 Nuclear Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
12 Department of Nuclear Physics, R.S.P.E., Australian National University, Canberra 0200, Australia
13 AIR Division, NPL, Teddington, TW11 0LW, UK
14 School of Engineering and Science, University of the West of Scotland, Paisley PA1 2BE, UK
15 INRNE, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria
* e-mail: E.Gamba@brighton.ac.uk
Published online: 14 November 2018
A fast-timing experiment was performed at the Argonne National Laboratory to measure the lifetimes of the lowest lying states of nuclei belonging to the deformed regions around mass number A≃110 and A≃150. These regions were populated via spontaneous fission of 252Cf and the gamma radiation following the decay of excited states in the fission fragments was measured using 51 Gammasphere detectors coupled with 25 LaBr3:Ce detectors. A brief description of the acquisition system and some preliminary results from the fast-timing analysis of the fission fragment 100Zr are presented. The lifetime value of τ = 840(65) ps was found for the 2+ state in 100Zr consistent within one standard deviation of the adopted value with 791 +26 -35ps. This is associated with a quadrupole deformation parameter of 0.36(2) which is within one standard deviation of the literature value of 0.3556+82 -57.
© The Authors, published by EDP Sciences, 2018
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