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Hamburg 2009 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 8: Speicherringe, ICP-MS, Neue Entwicklungen

MS 8.3: Vortrag

Mittwoch, 4. März 2009, 14:30–14:45, VMP 8 R05

Isochronous Mass Measurements of Neutron-Rich Fission Fragments at the FRS-ESR Facility — •Ronja Knöbel1,2, K. Beckert1, F. Bosch1, D. Boutin1,2, C. Brandau1, L. Chen1,2, I. J. Cullen3, C. Dimopoulou1, Aleksey Dolinskii1, B. Fabian1,2, H. Geissel1,2, M. Hausmann4, O. Klepper1, C. Kozhuharov1, J. Kurcewicz1, S. A. Litvinov1,2, Y. A. Litvinov1,2, Z. Liu3, M. Mazzocco1, F. Montes4, G. Münzenberg1, A. Musumarra5, S. Nakajima6, C. Nociforo1, F. Nolden1, T. Ohtsubo7, A. Ozawa8, Z. Patyk9, W. Plass1,2, C. Scheidenberger1,2, M. Steck1, B. Sun1,10, T. Suzuki6, P. M. Walker3, H. Weick1, N. Winckler1,2, M. Winkler1, and T. Yamaguchi61GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany — 2Justus-Liebig-Universität Gießen, 35392 Gießen, Germany — 3University of Surrey, Guildford, GU2 7XH, U. K. — 4Michigan State University, East Lansing, Mi 48824, U.S.A. — 5Laboratori Nazionali del Sud, INFN Catania, Italy — 6Saitama University, 338-8570 Saitama, Japan — 7Niigata University, Niigata 950-2181, Japan — 8University of Tsukuba, Tsukuba 305-8577, Japan — 9Soltan Institute for Nuclear Studies, 00-681 Warszawa, Poland — 10School of Physics, Peking University, Beijing 100871, China

Accurate mass measurements of exotic nuclei give insight into basic nuclear properties important for the understanding of nuclear structure and astrophysics. The unique combination of the fragment separator FRS and the cooler-storage ring ESR has been used for the investigations of short-lived neutron-rich masses of 238U-fission fragments via Isochronous Mass Spectrometry (IMS). The method has been extended with an additional magnetic rigidity determination. Masses for 14 nuclides have been obtained for the first time. The experimental setup, the data analysis, and the results will be presented.

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