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Bochum 2009 – scientific programme

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HK: Fachverband Hadronen und Kerne

HK 37: Nuclear Structure and Dynamics II

HK 37.2: Group Report

Tuesday, March 17, 2009, 17:00–17:30, H-ZO 50

Spectroscopy in the neighbourhood of 100Sn [*] — •Ch. Hinke, M. Böhmer, K. Eppinger, T. Faestermann, R. Gernhäuser, R. Krücken, and L. Maier — Physik Department E12, TU München

The investigation of the shell structure far from the valley of stability is a major task in modern nuclear structure physics, especially close to the drip lines.
By fragmentation of a 1.0 A GeV 124Xe beam from the GSI accelerators 100Sn and neighbouring nuclei have been produced, separated in the FRS and identified by multiple deltaE, Brho and ToF measurements. The nuclei were stopped in an implantation detector with high spatial resolution in order to correlate implantations with succeeding decays. The device was surrounded by the "Stopped Beam" Rising array of 15x7 Ge-detectors in close geometry. In this configuration the setup enabled us to do nearly 4π spectroscopy of the emitted gamma and particle decay radiation.
In our contribution we focus on new results concerning the particle stability of exotic nuclides in the vicinity of 100Sn. We also present the results of isomer spectroscopy in the 100Sn region e.g. the first observation of the 6+ to 4+ transition from the already known 102Sn isomer. A brief preliminary status of the ongoing 100Sn beta-gamma decay analysis will also be given.
supported by the MLL, BMBF (06MT238), DFG (EXC153), EPSRC, STFC (UK), and EURONS

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