Mainz 2022 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HK: Fachverband Physik der Hadronen und Kerne
HK 8: Structure and Dynamics of Nuclei II
HK 8.3: Vortrag
Montag, 28. März 2022, 14:30–14:45, HK-H7
Lifetimes of non-yrast states in 104Mo — •Matthias Rudigier1, Martin von Tresckow1, Thorsten Kröll1, Jan Jolie2, Yung-He Kim3, Ulli Köster3, Kosuke Nomura4, and Jean-Marc Regis2 — 1Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany — 2Institut für Kernphysik, Universität zu Köln, Köln, Germany — 3Institute Laue Langevin, Grenoble, France — 4Physics Department, University of Zagreb, Zagreb, Croatia
The region of neutron-rich nuclei around N=60 is well known for abrupt changes in nuclear structure from N=58 to N=60 for Zr and Sr. The deformation changes quickly and competing minima in the potential energy surface appear which result in shape coexistence. For the heavier isotopes Mo and Ru the evolution is much more smooth. Nuclear structure theory is capable of describing the ground state band of Mo isotopes in this mass region quite well. However, experimental data on non-yrast states is not reproduced similarly well. This is especially true for the first excited 0+ state in the Mo isotopic chain. We performed an experiment at the Lohengrin mass separator at the ILL, to measure lifetimes of non-yrast states using the fast timing method with the goal to obtain more detailed information on the configurations present in 104Mo. In particular the aim is to determine the lifetime of the first excited 0+ state. Preliminary results will be discussed in comparison to neighbouring nuclei, as well as in terms of theoretical predictions on level energies and transition strengths.Funding support is acknowledged from the EURONS2 and HFHF.