Investigation Of The Fragmentation In The Reaction Of388A MeV²⁰Ne In C Target

The knowledge of heavy ion fragmentation at intermediate andhigh energy is very important in nuclear physics, astrophysics, andmedical physics. The total charge-changing cross sections for theproduction of projectile fragments are measured in the interactionsof388A MeV20Ne with carbon target sandwiched with CR-39plasticnuclear track detectors. A high speed imaging microscope withsophisticated track analysis software was utilized to extract thecharge information fronmultiple ion tracks be belonging to a singlefragmentation event. The tracks on the both side of the CR-39sheets and on the surfaces neighboring targets are minimized by atrack matching roution. Then correlation respectively piay the totalreaction cross section and projectile after fractured pieces ofpoints generated by the reaction cross section; On the other hand,this experiment also studied the primary particles and secondaryparticles of the scattering Angle.The measured total charge-changing cross sections arecompared with the predictions using the Bradt-Peters semi empirialformula, and the NUCFRAG2and PHITS modles. It is shown that themeasured experimental results are in good agreement with the theoretical modle prediction and other experimental results, and itcan be clearly seen that the partial cross sections for fragmentproduction show obvious odd-even effects.On the other hand, this experiment also studied the primaryparticles and secondary particles of the scattering Angle. We canfound that the fragments particle emission angle larger than theprimary particle emission angle. Some fragments particle emissionangle achieves8o.