München 2006 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 52: Instrumentation und Anwendungen
HK 52.5: Vortrag
Donnerstag, 23. März 2006, 18:00–18:15, H
MATS - Measurements with an Advanced Trapping System at the future GSI facility FAIR — •Klaus Blaum1,2 and Frank Herfurth1 — 1GSI Darmstadt, Planckstraße 1, 64291 Darmstadt, Germany — 2Institut für Physik, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany
The mass and its inherent connection with the nuclear binding energy is one of the fundamental properties 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 and the onset of deformation, the verification of nuclear mass models and mass formulas, to tests of the weak interaction and of the Standard Model. The required relative accuracy ranges from 10−5 to below 10−8 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 is well suited to provide high accuracy and sensitivity even for short-lived nuclides. Furthermore, ion traps offer advantages when used for precision decay studies. With MATS at FAIR we aim for applying both techniques to 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, and a high precision Penning trap system for mass measurements and decay studies. MATS will be setup in the low energy branch of the super FRS, that makes thermalized products of fragmentation reactions available with high purity.