Münster 2017 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 22: Structure and Dynamics of Nuclei III
HK 22.5: Vortrag
Dienstag, 28. März 2017, 15:15–15:30, F 2
In-flight and decay spectroscopy of 95Kr* — •Rosa-Belle Gerst, Kevin Moschner, and Andrey Blazhev — Institut für Kernphysik, Universität zu Köln
Excited states in 95Kr have been measured at the RIBF at the RIKEN Nishina Center for Accelerator-Based Science via a prompt-delayed correlation analysis of conjoined SEASTAR and EURICA data. Even-even Sr and Zr nuclei in the A = 100 region show a sudden onset of deformation at N = 60 while the lighter isotopes up to N = 58 are rather spherical. For the even Kr isotopes it could be shown that this onset of collectivity is fairly smooth [1]. The nuclei with N = 59 neutrons lie just at the border of these phenomena and are therefore of particular interest. In a study of fission fragments at the ILL an isomeric (7/2+) state in 95Kr could be identified [2].
The analysis of prompt gamma-radiation observed in DALI2 in coincidence with isomeric transitions identified in the EURICA array provides new information on the nuclear structure above the known isomeric state in 95Kr.
M. Albers et al., Phys. Rev. Lett. 108, 62701 (2012)
J. Genevey et al., Phys. Rev. C 73, 37308 (2006)
*Supported by the DFG under Grant No. BL 1513/1-1