First results from the stopped beam isomer rising campaign at GSI

S. Piétri , P.H. Regan , Zs. Podolyak , D. Rudolph , M. Gorska , A. Jungclaus , M. Pfuetzner , A.B. Garnsworthy , S.J. Steer , L. Caceres , E. Werner-Malento , R. Hoischen , J. Gerl , I. Kojouharov , H. Schaffner , H.J. Wollersheim , F. Becker , P. Bednarczyk , P. Doornenbal , H. Geissel , J. Grebosz , A. Kelic , N. Kurz , F. Montes , W. Prokopowicz , T. Saito , S. Tashenov , A. Heinz , T. Kurtukian Nieto , G. Benzoni , M. Hellstroem , L.-L. Andersson , L. Atanasova , D.L. Balabanski , M.A. Bentley , Bertram Blank (1) , A. Blazhev , C. Brandau , J.R. Brown , A.M. Bruce , F. Camera , W.N. Catford , I.J. Cullen , Zs. Dombradi , E. Estevez , C. Fahlander , W. Gelletly , G. Ilie , E.K. Johansson , J. Jolie , G.A. Jones , M. Kmiecik , F.G. Kondev , S. Lalkovski , Z. Liu , A. Maj , S. Myalski , T. Shizuma , A.J. Simons , S. Schwertel , P.M. Walker , O. Wieland

1 CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan

The first results from a series of experiments focused on the study of the internal structure of nuclei at the extremes of N:Z ratio using isomer spectroscopy are reported. These experiments represent the first of the Stopped Beam section of the Rare Isotopes Investigations at GSI (RISING) project. Exotic nuclei were synthesized using relativistic projectile fragmentation of \sim 500 \rightarrow 1000 MeV/u beams of 107Ag, 208Pb, 136Xe and 58Ni, or fission of 750 MeV/u 238U provided by the SIS synchrotron at GSI. A detailed description of the RISING stopped beam set up is given, together with a report of the performance of the associated gamma-ray spectrometer array. Selected results of the first experimental campaign are presented together with a discussion on the use of isomeric spectroscopy to study GeV range nuclear fragmentation. Details on future research plans of this collaboration are also outlined.

Domaines: Physique Nucléaire Expérimentale [nucl-ex]

S. Piétri, P.H. Regan, Zs. Podolyak, D. Rudolph, M. Gorska, et al.. First results from the stopped beam isomer rising campaign at GSI. Acta Physica Polonica B, 2007, 38, pp.1255-1264. ⟨in2p3-00315311⟩