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Rapidity dependence of entropy production in proton- and nucleus-induced reactions on heavy nuclei

Journal Article · · Phys. Rev. C; (United States)
The entropy of hot nuclear systems is deduced from the mass distribution of fragments emitted from high energy proton- and nucleus-induced reactions via a quantum statistical model. It is found that the entropy per baryon, S/A, of intermediate rapidity (''participant'') fragments is higher than the entropy of target rapidity (''spectator'') fragments. The spectator fragments exhibit S/A values of roughly-equal1.8 independent of the projectile energy from 30 MeV/nucleon up to 350 GeV. This value of the entropy coincides with the entropy at which nuclear matter becomes unbound.
Research Organization:
National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824
OSTI ID:
6746161
Journal Information:
Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 29:5; ISSN PRVCA
Country of Publication:
United States
Language:
English