Tübingen 2003 – scientific programme
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HK: Physik der Hadronen und Kerne
HK 7: Kern- und Teilchen-Astrophysik I
HK 7.9: Talk
Monday, March 17, 2003, 18:15–18:30, F
At the limits: Very neutron-rich isotopes in the 132Sn region — •Oliver Arndt1, B.A. Brown2, I. Dillmann1, K.-L. Kratz1, P. Möller3, B. Pfeiffer1, W.B. Walters4, and A. Wöhr4 — 1Inst. f. Kernchemie, Univ. Mainz — 2Dept. of Physics & Astronomy and NSCL, MSU, USA — 3Theortical Division, LANL, USA — 4Dept. of Chemistry, Univ. of Maryland, USA
Using highest possible selectivity in isotope production and detection at the CERN-ISOLDE facility, we have measured beta-decay properties of a number of new r-process nuclides in the Z-region below doubly-magic 132Sn. Delayed-neutron data on 129,130Ag, 129−133Cd and 133−135In [1-3] will be compared to new QRPA and OXBASH predictions. We have also deduced the half-life of the long predicted isomer of 129Cd.
Consequences for the formation of the A≃130 solar-system r-abundance peak will be discussed.
[1] K.-L. Kratz et al., Hyperfine Interactions 129 (2000) 185
[2] M. Hannawald et al., Phys. Rev. C 62 (2000) 054301
[3] I.Dillmann et al., Eur. Phys. J. A 13 (2002) 281