Mainz 2012 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 6: Struktur und Dynamik von Kernen
HK 6.7: Vortrag
Montag, 19. März 2012, 15:45–16:00, P 4
Preparing a dedicated set up for level lifetime measurements using the Recoil Doppler Shift technique with fast radioactive beams — •M. Hackstein1, C. Fransen1, A. Dewald1, A. Algora6, F. Ameil2, P. Boutachkov2, N. Braun1, T. Braunroth1, A. Corsi5, M. Doncel6, A. Gadea6, J. Gerl2, J. Grebosz2, G. Guastalla2, T. Habermann2, J. Jolie1, N. Kurz2, J. Litzinger1, C. Louchar5, E. Merchan2, K. Moschner1, C. Nociforo2, A. Obertelli5, M. Reese4, P. Reiter1, P. Petkov3, M. Pfeiffer1, S. Pietri2, B. Quitana2, W. Rother1, J. Taprogge1, A. Wendt1, H. Wollersheim2, and K.O. Zell1 — 1IKP, U. zu Köln, Germany — 2KP II, GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany — 3INRNE, Sofia, Bulgaria — 4IKP, TU Darmstadt, Germany — 5CEA Saclay, France — 6Instituto de Fisica Corpuscular (IFIC), Valencia, Spain
In this paper we report on the development of a new plunger device especially designed to meet the constraints found at the fragment recoil separator (FRS) at GSI (Darmstadt) in combination with PRESPEC. The aim is to measure level lifetimes in the pico-second range using the recoil distance Doppler shift (RDDS) method of states in exotic nuclei excited via Coulomb excitation or knock-out reactions with radioactive beams at relativistic energies. We will also report on the first results obtained from a first commissioning run performed recently with a stable 54Cr beam.