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Bochum 2018 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 10: Structure and Dynamics of Nuclei II

HK 10.1: Group Report

Monday, February 26, 2018, 16:30–17:00, HZO 70

Fast timing results from EXILL&FATIMA for fission fragments in the neutron-rich region around Z=40, N=60. — •Jan Jolie1, Jean-Marc Régis1, Saba Ansari1,2, Nima Saed-Samii1, and Nigel Warr11Institut für Kernphysik, Universität zu Köln, Zülpicher Str. 77, 50937 Köln — 2CEA de Saclay, IRFU, 91191 Gif-sur-Yvette, France

Several lifetimes or lifetime limits were measured in the even-even Strontium isotopes 94-Sr, 96-Sr and 98-Sr [1] and Zirconium isotopes 98-Zr, 100-Zr, and 102-Zr [2] using the EXILL&FATIMA array [3] to perform fast electronic timing on fission products produced after cold neutron capture in 235U. Absolute values and limits for the lifetimes of the lowest yrast states could be determined. The results are compared to state-of-the-art Monte Carlo Shell Model calculations and to several predictions based on Energy Density Functionals. Supported by the BMBF, Grant No. 05P15PKFNA.

[1] J.M. Régis et al. Phys. Rev. C95 (2017) 054319 [2] S. Ansari et al. Phys. Rev. C96 (2017) 054323 [3] J.M. Régis et al. Nucl. Instr. Meth. Phys. Res. A763 (2014) 210

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