32S ions of energy 45 MeV/nucleon, 112Sn target.

The experimental work was performed by S.N. Soisson at the Cyclotron Institute of Texas A&M University. A beam of 32S ions of energy 45 MeV/nucleon was delivered by the K500 superconducting cyclotron and interacted with an isotopically enriched 112Sn target. Fragments produced in peripheral and semi-peripheral collisions were detected by the FAUST multi-detector array. We believe that for relatively small systems, the Markov-chain SMM is a better choice for the analysis of nuclear multifragmentation data concerning the isospin degree of freedom, as angular momentum may be important. In the calculations presented in this work, the freeze-out volume was taken to be six times larger than the normal nuclear volume. We have verified that the variation of the freeze-out volume within reasonable values (e.g., three to six times the normal nuclear volume) does not influence the isotopic distributions of the produced fragments. We point out that the whole ensemble of events generated by the DIT code was furnished as input to the SMM code. We note that the quasiprojectiles generated by DIT are at normal density. When furnished to SMM, they are treated as already expanded at the assumed density.




Multifragmentation of reconstructed quasi-projectiles in the mass region A ~ 30

A dual-axis dual-lateral position-sensitive detector for charged particle detection