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Gießen 2007 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 49: Poster

HK 49.38: Poster

Donnerstag, 15. März 2007, 16:00–17:00, P

MATS - Measurements with an Advanced Trapping System at the future GSI facility FAIR — •Frank Herfurth1, Klaus Blaum1,2, and the MATS Collaboration11GSI Darmstadt, 64291 Darmstadt, Germany — 2Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany

The mass and its inherent connection with the nuclear binding energy is a unique property of a nuclide. Thus, precise mass values are important for a variety of applications, ranging from nuclear-structure studies like the investigation of shell closures, test of nuclear mass models and mass formulas, to tests of the weak interaction and of the Standard Model. A relative precision from 10−5 down to 10−8 is necessary for radionuclides, which most often have half-lives well below 1 s. Substantial progress in Penning trap mass spectrometry has made this method a prime choice for precision measurements on rare isotopes. The technique has the potential to provide high accuracy and sensitivity even for very short-lived nuclides. Furthermore, ion traps can be used and offer advantages for precision decay studies. With MATS at FAIR we plan to apply both techniques to very short-lived radionuclides: High-precision mass measurements and in-trap conversion electron and alpha spectroscopy. The experimental setup of MATS is a unique combination of an electron beam ion trap for charge breeding, ion traps for beam preparation as well as decay studies, and a high precision Penning trap system for mass measurements. The proposed setup and the planned experimental program will be presented.

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