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Berlin 2005 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 22: Postersitzung

HK 22.24: Poster

Monday, March 7, 2005, 16:30–18:00, TU MA141

New Mass Measurements with FRS-ESR at GSI — •L. Chen1, K. Beckert2, P. Beller2, F. Bosch2, D. Boutin1,2, L. Caceres2, J.J. Carroll3, R. S. Chakrawarthy4, D. Cullen5, B. Franzke2, H. Geissel1,2, J. Gerl2, E. Greda2, G. Jones6, A. Kishada5, O. Klepper2, H.-J. Kluge2, R. Knöbel1, C. Kozhuharov2, E. Kulich2, N. Kuzminchuk2, S.A. Litvinov1,2, Yu.A. Litvinov1,2, Z. Liu6, S. Mandal2, M. Matos2, F. Montes7, G. Münzenberg2, F. Nolden2, Yu.N. Novikov8, W. Plass1, Z. Podolyak6, R. Propri3, S. Rigby5, N. Saito2, T. Saito2, C. Scheidenberger1,2, M. Shindo9, M. Steck2, P. Ugorowski3, G. Vorobjev2, P.M. Walker6, H. Weick2, S. Williams6, M. Winkler2, and H.-J. Wollersheim21JLU Giessen — 2GSI Darmstadt — 3SU Youngstown — 4TRIUMF Vancouver — 5Uni. Manchester — 6Uni. Surrey — 7MSU East Lansing — 8PNPI Gatchina — 9Uni. Tokyo

First results are reported from a recent experiments with neutron-rich uranium fragments at the FRS-ESR facilities. 670 MeV/u 238U projectiles with an intensity of 1-2*109particles/spill were fragmented in 4 g/cm2 9Be target placed in front of the fragment separator FRS. The FRS was used to separate the fragments in flight and to inject them into the storage-cooler ring ESR. Time resolved Schottky Mass Spectrometry was applied to measure the revolution frequencies of stored and electron-cooled ions. Preliminary results on masses and half-lives of neutron-rich nuclides in the lead area will be presented.

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