Nuclear fragmentation by tunneling

Maruyama, Toshiki  ; Bonasera, A.*; Chiba, Satoshi

Fragmentation of nuclear system by tunneling is discussed by molecular dynamics simulation coupled with imaginary time method. In this way we obtain informations on the fragmenting systems at low densities and low 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 fragmentation by tunneling but we obtain some observables which can be a clear signature of such phenomena.