Isotopic effects in nuclear reactions at relativistic energiesReportar como inadecuado

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1 GSI - Gesellschaft für Schwerionenforschung mbH 2 LNS - Laboratori Nazionali del Sud 3 IPNO - Institut de Physique Nucléaire d-Orsay 4 INFN - Istituto Nazionale di Fisica Nucleare Milano 5 DAPNIA - Département d-Astrophysique, de physique des Particules, de physique Nucléaire et de l-Instrumentation Associée 6 GANIL - Grand Accélérateur National d-Ions Lourds

Abstract : A systematic study of isotopic effects in the break-up of projectile spectators at relativistic energies has been performed at the GSI laboratory with the ALADiN spectrometer coupled to the LAND neutron detector. Besides a primary beam of 124Sn, also secondary beams of 124La and 107Sn produced at the FRS fragment separator have been used in order to extend the range of isotopic compositions. The gross properties of projectile fragmentation are very similar for all the studied systems but specific isotopic effects have been observed in both neutron and charged particle production. The breakup temperatures obtained from the double ratios of isotopic yields have been extracted and compared with the limiting-temperature expectation.

Autor: C. Sfienti - M. De Napoli - S. Bianchin - A.S. Botvina - J. Brzychczyk A. Le Fèvre - J. Lukasik - P. Pawlowski W. Trautmann - P.



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