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Heidelberg 2015 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 46: Structure and Dynamics of Nuclei 10

HK 46.7: Talk

Wednesday, March 25, 2015, 16:00–16:15, T/SR14

Investigation of isoscalar giant resonances in a stored beam experiment with EXL — •J.C. Zamora for the EXL E105 collaboration — Institut für Kernphysik, TU Darmstadt

The objective of the EXL project is the investigation of nuclear rections of stored exotic nuclei with internal targets at FAIR. In this project a universal detector system will provide high resolution and large solid angle coverage for kinematically complete measurements.
In the first campaign of EXL at the present Experimental Storage Ring (ESR) at GSI, the collaboration performed commissioning and a first physics programme by using dedicated UHV compatible DSSDs for in-ring particle detection. With this setup, an experiment was done with a stored ion beam of 58Ni and an internal helium gas-jet target aiming for the investigation of isoscalar giant resonances in inverse kinematics. Preliminary results show evidence for the excitation of the ISoscalar Giant Monopole Resonance (ISGMR) and the ISoscalar Giant Dipole Resonance (ISGDR) in the 58Ni nucleus. In this talk, results and the current status of the data analysis will be discussed. This work is supported by BMBF (06DA9040I and 05P12RDFN8), HIC for FAIR, TU Darmstadt-GSI cooperation contract and GSI-KVI/RUG cooperation contract.

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