Göttingen 1997 – scientific programme
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HK: Hadronen und Kerne
HK 32: Kernspektroskopie, mittelschwere Kerne I
HK 32.3: Talk
Tuesday, March 25, 1997, 17:45–18:00, HS E
Production cross-sections and fission-yields of very neutron-rich fission fragments at GSI — •C. Engelmann1, F. Ameil2, P. Armbruster1, M. Bernas2, C. Böckstiegel3, S. Czajkowski4, Ph. Dessagne5, C. Donzaud2, H. Geissel1, A. Heinz1, Z. Janas6, C. Kozhuharov1, C. Miehé5, G. Münzenberg1, M. Pfützner6, W. Schwab1, C. Stéphan2, K. Sümmerer1, L. Tassan-Got2, and B. Voss1 — 1Gesellschaft für Schwerionenforschung, Darmstadt, Germany — 2IPN Orsay, BP 1, IN2P3 CNRS, France — 3Institut für Kernphysik, TH Darmstadt, Germany — 4CENBG, Bordeaux-Gradignan, IN2P3 CNRS, France — 5CRN Strasbourg, IN2P3 CNRS, France — 6Warsaw University, Poland
Fission of relativistic 238U projectiles is a new powerful method [1] for the production of very neutron-rich fission fragments. The relativistic kinematic renders possible the separation of the fission fragments with the fragment separator, FRS, at GSI Darmstadt and the identification of their mass and nuclear charge. In a recent experiment about 100 new neutron-rich isotopes were produced and identified for the first time, including the doubly-magic nucleus 2878Ni [2]. The method, the fission yields and the production cross sections, and the feasibility of these new isotopes for secondary beams will be discussed.
[1] Bernas, M. et al.: Phys. Lett. B331 (1994)19-24
[2] Engelmann, C. et al.: Z.Phys. A352 351-352(1995)