Göttingen 1997 – wissenschaftliches Programm

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HK: Hadronen und Kerne

HK 32: Kernspektroskopie, mittelschwere Kerne I

HK 32.6: Gruppenbericht

Dienstag, 25. März 1997, 18:45–19:00, HS E

Determination of beta decay energies of neutron-rich nuclides in the A≃110 mass region^* — •I. Kl"ockl¹, B. Pfeiffer¹, S. Schoedder¹, G. Lhersonneau², K.-L. Kratz¹, P. Dendooven², and the IGISOL collaboration² — ¹Institut f"ur Kernchemie, Universit"at Mainz, Germany — ²Department of Physics, University of Jyv"askyl"a, Finland

At the IGISOL mass separator facility, Q_β values of neutron rich Ru- and Rh-isotopes in the mass range A=110 to A=116 were measured. The experimental setup consisted of a plastic scintillator telescope for the detection of β-particles, a large volume Ge-detector and a planar Ge detector. Listmode data for β,γ,t- and γ,γ,t-coincidences were taken with a VME crate controller. From these data, level schemes were improved, and nuclear masses far from stability were determined and compared to theoretical predictions from different mass models.

^*This work is supported by DFG (Kr806/5) and DAAD (313/SF-PPP-3/95-kr).