Temperature effects in nuclear isoscaling
- Instituto de Fisica, Universidade Federal do Rio de Janeiro Cidade Universitaria, CP 68528, 21941-972, Rio de Janeiro (Brazil)
- Joint Institute for Nuclear Astrophysics, National Superconducting Cyclotron Laboratory, and the Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States)
- Departamento de Fisica, Instituto Tecnologico de Aeronautica-CTA, 12228-900 Sao Jose dos Campos (Brazil)
The properties of the nuclear isoscaling at finite temperature are investigated and the extent to which its parameter {alpha} holds information on the symmetry energy is examined. We show that, although finite temperature effects invalidate the analytical formulas that relate the isoscaling parameter {alpha} to those of the mass formula, the symmetry energy remains the main ingredient that dictates the behavior of {alpha} at finite temperatures, even for very different sources. This conclusion is not obvious as it is not true in the vanishing temperature limit, where analytical formulas are available. Our results also reveal that different statistical ensembles lead to essentially the same conclusions based on the isoscaling analysis, for the temperatures usually assumed in theoretical calculations in the nuclear multifragmentation process.
- OSTI ID:
- 21293954
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 80, Issue 4; Other Information: DOI: 10.1103/PhysRevC.80.044606; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
Similar Records
Symmetry energy and the isoscaling properties of the fragments produced in {sup 40}Ar, {sup 40}Ca+{sup 58}Fe, {sup 58}Ni reactions at 25, 33, 45, and 53 MeV/nucleon
Isoscaling as a Measure of Symmetry Energy in the Lattice Gas Model