Darmstadt 2016 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 58: Structure and Dynamics of Nuclei XI

HK 58.1: Gruppenbericht

Donnerstag, 17. März 2016, 16:30–17:00, S1/01 A03

Decay Spectroscopy with EURICA in the region of ¹⁰⁰Sn — •Daniel Lubos, Roman Gernhäuser, Thomas Faestermann, and Konrad Steiger for the EURICA RIBF09 collaboration — Technische Universität München, Germany

At the radioisotope beam factory (RIBF) at the RIKEN Nishina Center, an experiment on properties of nuclei in the region of ¹⁰⁰Sn has been performed regarding the Gamow-Teller transition strength and the search for new isotopes as well as isomers. For decay spectroscopy, we used the detector arrays EURICA and WAS³ABi which consist of Ge- and LaBr- as well as Si-detectors, respectively.
The experiment has revealed new nuclei along the N = Z - 2 line and uncertainties of half-lives, close to the proton dripline southwest of ¹⁰⁰Sn, are significantly improved. The region around ¹⁰⁰Sn is a unique playground to study nuclear structure as well as fundamental interactions and it is important towards the understanding of the rp-process in astrophysics. The presentation gives an overview of the dedicated high efficiency setup and the experimental program. Results of the Q_β-value analysis of ¹⁰⁰Sn using a Monte Carlo simulation, lifetime analysis and γ-spectroscopy of nuclei in this region as well as the nuclear structure are discussed. This project is supported by the DFG Cluster of Excellence: Origin and Structure of the Universe and Hanns-Seidel-Stiftung.