Isocaling and the symmetry energy in the multifragmentation regime of heavy-ion collisions

Journal Article · Tue Jun 15 00:00:00 EDT 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.81.064613· OSTI ID:21388617

Chen, Z ^[1]; Kowalski, S ^[2]; Huang, M ^[1]; Wada, R; Hagel, K; Natowitz, J B; Materna, T; Qin, L; Sahu, P K ^[1]; Keutgen, T ^[3]; Bonasera, A ^[1]; Wang, J ^[4]

---

1. Cyclotron Institute, Texas A and M University, College Station, Texas 77843 (United States)
2. Institute of Physics, Silesia University, PL-Katowice (Poland)
3. FNRS and IPN, Universite Catholique de Louvain, B-1348 Louvain-Neuve (Belgium)
4. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China)

The ratio of the symmetry energy coefficient to temperature, a{sub sym}/T, in Fermi energy heavy-ion collisions, was experimentally extracted as a function of the fragment atomic number using isoscaling parameters and the variance of the isotope distributions. The extracted values were compared to the results of calculations made with an antisymmetrized molecular dynamics (AMD) model employing a statistical decay code to account for deexcitation of excited primary fragments. The experimental values are in good agreement with the values calculated from the final ground-state products but are significantly different from those characterizing the yields of the primary AMD fragments.

• OSTI ID: 21388617
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 81, Issue 6; Other Information: DOI: 10.1103/PhysRevC.81.064613; (c) 2010 The American Physical Society; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ATOMIC NUMBER
DE-EXCITATION
DISTRIBUTION
GROUND STATES
HEAVY ION REACTIONS
ISOTOPES
MOLECULAR DYNAMICS METHOD
NUCLEAR DECAY
NUCLEAR FRAGMENTATION
SYMMETRY
CALCULATION METHODS
DECAY
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
NUCLEAR REACTIONS