Tübingen 2003 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 47: Physik mit schweren Ionen V
HK 47.4: Vortrag
Donnerstag, 20. März 2003, 17:45–18:00, E
Charge-pickup reactions of 208Pb at 1 A GeV in different targets — •Aleksandra Kelic1, T. Enqvist2, K.-H. Schmidt1, W. Wlazlo3, P. Armbruster 1, J. Benlliure 4, M. Bernas5, A. Boudard3, S. Czajkowski6, S. Leray3, B. Mustapha7, M. Pravikoff6, F. Rejmund5, C. Stephan5, J. Taieb3, L. Tassan-Got 5, and C. Volant 3 — 1GSI Darmstadt, Germany — 2University of Jyvaskyla, Finland — 3DAPNIA/SPhN CEA/Saclay, France — 4University of Santiago de Compostela, Spain — 5IPN Orsay, IN2P3, France — 6CENBG, IN2P3, France — 7Argonne National Laboratory, USA
The isotopically resolved charge-pickup cross-sections in the reactions of 1 A GeV 208Pb with hydrogen, deuterium and titanium targets are measured with a high-resolution magnetic spectrometer at GSI. Measured total cross-sections follow nicely the general behaviour of other published data with projectile energy and target size. The isotopic distributions measured in this work are compared with the predictions of two intra-nuclear cascade models. While the change in the shape of the isotopic distribution with the target size can be explained by different excitation energies induced in the intra-nuclear stage, the situation is more delicate for the influence of projectile energy. To understand this, one needs to systematically extend our experimental knowledge as a basis for the development of improved models.