Theoretical approaches and experimental evidence for liquid-vapor phase transitions in nuclei

Conference · Mon Jan 01 04:00:00 EST 2001

OSTI ID:821749

Moretto, L G ^[1]; Elliott, J B; Phair, L; Wozniak, G J; Mader, C M; Chappars, A

---

1. LBNL Library

The leptodermous approximation is applied to nuclear systems for T > 0. The introduction of surface corrections leads to anomalous caloric curves and to negative heat capacities in the liquid-gas coexistence region. Clusterization in the vapor is described by associating surface energy to clusters according to Fisher's formula. The three-dimensional Ising model, a leptodermous system par excellence, does obey rigorously Fisher's scaling up to the critical point. Multifragmentation data from several experiments including the ISiS and EOS Collaborations, as well as compound nucleus fragment emission at much lower energy follow the same scaling, thus providing the strongest evidence yet of liquid-vapor coexistence.

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE Director. Office of Science. Nuclear Physics (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 821749
• Report Number(s): LBNL--49235
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ISING MODEL
NUCLEAR PHYSICS
NUCLEI
SURFACE ENERGY