Frankfurt 2014 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 11: Struktur und Dynamik von Kernen
HK 11.7: Talk
Monday, March 17, 2014, 18:15–18:30, HZ 5
Study of isomer and proton decays in N ≤ Z nuclei below 100Sn — •Kevin Moschner1, Andrey Blazhev1, Plamen Boutachkov2, Paul Davis3, and Robert Wadsworth3 for the EURICA collaboration — 1IKP, University of Cologne, Germany — 2GSI Darmstadt, Germany — 3University of York, UK
The RIBF83 experiment was the first experiment performed within the EURICA project at the new-generation Radioactive Isotope Beam Facility (RIBF) at RIKEN, Japan. The aim of this experiment is to further probe the decays of known isomers in N = Z nuclei, in order to provide detailed tests of the shell model, as well as search for evidence of predicted, but as yet unobserved isomers in N ≤ Z nuclei.
To create the nuclei of interest projectile fragmentation of a 345 MeV/u 124Xe beam on a 9Be target was used. The fragments were then separated and identified on an event by event basis in the BigRIPS spectrometer.
The EURICA setup utilizes the γ-ray efficiency of 12 EUROBALL HPGe cluster detectors in the RISING Stopped Beam configuration and the active stopper SIMBA composed of a segmented Si-array allowing for β-calorimetry measurements of positrons emitted in decays with Qβ∼ 10 MeV.
Although data analysis is still on-going to search for unknown isomeric transitions and study the particle and particle-γ decays of the implanted nuclei, first results will be presented in this contribution.
This work is supported by the German BMBF under contract Nos. 05P09PKCI5 and 05P12PKFNE.