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Vaporization and Multifragmentation in 1.2 GeV Antiproton induced Reactions

Abstract : With energetic antiproton-light-nucleus interactions it is possible to reach excitation energies exceeding nuclear binding energy. For 1.2 GeV $\bar P$ +Cu we observe the onset of vaporization at about 8 MeV/nueleon, but even at 15 MeV/nucleon the probability of vaporization is smaller than 15%. The threshold excitation energy for multifragmentation processes defined as the detection of at least 3 intermediate mass fragments is observed at about 4 MeV/nucleon for 1.2 GeV $\bar P$ + Cu and Ag. The probability of multifragmentation is small and even at excitation energy above the total binding energy not larger than 5% and 20% of the corresponding inclusive cross sections.
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http://hal.in2p3.fr/in2p3-00025656
Contributor : Michel Lion <>
Submitted on : Tuesday, February 21, 2006 - 9:15:33 AM
Last modification on : Thursday, February 1, 2018 - 1:33:20 AM

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F. Goldenbaum, L. Pienkowski, W. Bohne, T. V. Egidy, P. Figuera, et al.. Vaporization and Multifragmentation in 1.2 GeV Antiproton induced Reactions. 8th International Conference on Low Energy Antiproton Physics (LEAP'05), May 2005, Bonn, Germany. pp.225-230, ⟨10.1063/1.2130170⟩. ⟨in2p3-00025656⟩

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