Fragmentation cross sections of 20Ne collisions with different targets at 600 MeV/nucleon Original Research Article

Within the framework of the isospin-dependent Boltzmann–Langevin equation, the production cross sections of fragments are calculated for reactions of Ne collisions with C, Al, Cu, Sn, Ta, and Pb targets at 600 MeV/nucleon. It is found that the production cross sections for fragments Z=2 to 9 are qualitatively reproduced by the present calculations except for C target. The enhancement of even-Z fragments (C, O) cross sections shown in the experimental data is not well reproduced except for Ta target, however the observed suppression of the F fragment cross sections is described very well. The suppression of F production is discussed in terms of isotopic distribution of fragments. This is the first time to use the isospin-dependent Boltzmann–Langevin equation model to calculate the fragmentation cross sections for these reaction systems.