Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2007-08-08
Phys.Rev.Lett.100:022701,2008
Physics
Nuclear Physics
Nuclear Experiment
4 pages, 5 figures, revised version accepted in Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.100.022701
The spallation of $^{56}$Fe in collisions with hydrogen at 1 A GeV has been studied in inverse kinematics with the large-aperture setup SPALADIN at GSI. Coincidences of residues with low-center-of-mass kinetic energy light particles and fragments have been measured allowing the decomposition of the total reaction cross-section into the different possible de-excitation channels. Detailed information on the evolution of these de-excitation channels with excitation energy has also been obtained. The comparison of the data with predictions of several de-excitation models coupled to the INCL4 intra-nuclear cascade model shows that only GEMINI can reasonably account for the bulk of collected results, indicating that in a light system with no compression and little angular momentum, multifragmentation might not be necessary to explain the data.
Aumann Thomas
Bacri Ch. O.
Benlliure J.
Bianchin S.
Böhmer M.
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