Nuclear fragmentation

Nuclear fragmentation by tunneling

Fragmentation of nuclear system by tunneling is discussed in a molecular dynamics simulation coupled with imaginary time method. In this way we obtain informations on the fragmenting systems at low densities and temperatures. These conditions cannot be reached normally (i.e. above the barrier) in nucleus-nucleus or nucleon-nucleus collisions. The price to pay is the small probability of fragmen...

New scalings in nuclear fragmentation.

Fragment partitions of fragmenting hot nuclei produced in central and semiperipheral collisions have been compared in the excitation energy region 4-10 MeV per nucleon where radial collective expansion takes place. It is shown that, for a given total excitation energy per nucleon, the amount of radial collective energy fixes the mean fragment multiplicity. It is also shown that, at a given tota...

Fragmentation path of excited nuclear systems

We perform a study of the fragmentation path of excited nuclear sources, within the framework of a stochastic mean-field approach. We consider the reaction 129Xe + 119Sn at two beam energies: 32 and 50 MeV/A, for central collisions. It is observed that, after the compression phase the system expands towards a dilute configuration from which it may recontract or evolve into a bubble-like structu...

Nuclear Fragmentation Reactions and Heavy-Ion Therapy

New Technique for Nuclear Fragmentation in Phacoemulsification

The hard nucleus is considered as a piece of stone, so we use high phaco energy in standard phaco to fragment it. A new technique was described in this paper for nuclear fragmentation in Phacoemulsification, which does not depend mainly on phaco energy but depends on osmotic pressure of the nucleus. The nucleus is a living tissue and has its own special anatomical and physiological rules so we ...