Formation and decay of nuclei heated with high-energy antiprotons

B. Lott (1) , W. Bohne , J. Eades , T.V. Egidy , P. Figuera , H. Fuchs , J. Galin (1) , K. Gulda , F. Goldenbaum , D. Hilscher , U. Jahnke , J. Jastrzebski , W. Kurcewicz , M. Morjean (1) , G. Pausch , A. Peghaire (1) , L. Pienkowski , D. Polster , S. Proschitzki (2) , B. Quednau (1) , H. Rossner , S. Schmid , W. Schmid , P. Ziem

1 GANIL - Grand Accélérateur National d'Ions Lourds
2 IPNO - Institut de Physique Nucléaire d'Orsay

The decay of nuclei excited via the annihilation of 1.2 GeV antiprotons has been investigated. Thanks to the ability to determine the excitation energy, E*, for all events, largely irrespective of their mass partitions, the probabilities of the different channels at play could be estimated as a function of E*. The data show the prevalence of fission and evaporation up to E* = 4 MeV/nucleon, with no hint of a transition towards multifragmentation.

Domaines: Physique Nucléaire Expérimentale [nucl-ex]

B. Lott, W. Bohne, J. Eades, T.V. Egidy, P. Figuera, et al.. Formation and decay of nuclei heated with high-energy antiprotons. International Nuclear Physics Conference INPC 98, Aug 1998, Paris, France. pp.803c-806c, ⟨10.1016/S0375-9474(00)88550-4⟩. ⟨in2p3-00024879⟩