Rise and fall of multifragment emission
Abstract
We have studied multifragment decays of Au projectiles after collisions with C, Al, and Cu targets at a bombarding energy of 600 MeV nucleon. We find that with increasing violence of the collision, measured via the multiplicity of light particles, the mean multiplicity of intermediate-mass fragments originating from the projectile first increases to a maximum <MIMF>~=3 and then decreases again. Calculations using the Boltzmann-Uehling-Uhlenbeck model suggest that the fragmentation is governed by the energy Edep deposited into the projectile spectator and that <MIMF> reaches its maximum around Edep~=8 MeV/nucleon.
- Publication:
-
Physical Review Letters
- Pub Date:
- September 1991
- DOI:
- 10.1103/PhysRevLett.67.1214
- Bibcode:
- 1991PhRvL..67.1214O
- Keywords:
-
- 25.70.Np