Isotopic Scaling in Nuclear Reactions
National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA. Physical Review Letters
(Impact Factor: 7.51).
05/2001; 86(22):5023-6. DOI: 10.1103/PhysRevLett.86.5023
A three parameter scaling relationship between isotopic distributions for elements with Z< or =8 has been observed. This allows a simple description of the dependence of such distributions on the overall isospin of the system. This scaling law (termed isoscaling) applies for a variety of reaction mechanisms that are dominated by phase space, including evaporation, multifragmentation, and deeply inelastic scattering. The origins of this scaling behavior for the various reaction mechanisms are explained. For multifragmentation processes, the systematics is influenced by the density dependence of the asymmetry term of the equation of state.
Available from: Xavier Roca-Maza
- "We will focus our study on the thermodynamical properties of infinite symmetric matter. Note, however, that error propagation in hot isospin asymmetric nuclear matter can provide an additional handle on the symmetry energy  . "
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ABSTRACT: We study symmetric nuclear matter at finite temperature, with particular
emphasis on the liquid-gas phase transition. We use a standard covariance
analysis to propagate statistical uncertainties from the density functional to
the thermodynamic properties. We use four functionals with known covariance
matrices to obtain as wide a set of results as possible. Our findings suggest
that thermodynamical properties are very well constrained by fitting data at
zero temperature. The propagated statistical errors in the liquid-gas phase
transition parameters are relatively small.
Journal of Physics G Nuclear and Particle Physics 07/2014; 42(3). DOI:10.1088/0954-3899/42/3/034005 · 2.78 Impact Factor
Available from: A. Balabekyan
- "On the other hand, much smaller values of the fitting parameter B in the mass region 7 ≤ A ≤ 30 may point to a possible multifragmentation mechanism in the formation of these light fragments  . A different situation may be seen in the mass region 40 ≤ A ≤ 60, both for proton-and deuteron-induced reactions. "
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ABSTRACT: We measure cross sections for residual nuclide formation in the mass range 6 < A < 97 caused by bombardment with protons and deuterons of 3.65 GeV/nucleon energy of enriched tin isotopes (112-Sn, 118-Sn, 120-Sn, 124-Sn). The experimental data are compared with calculations by the codes FLUKA, LAHET, CEM03, and LAQGSM03. Scaling behavior is observed for the whole mass region of residual nuclei, showing a possible multifragmentation mechanism for the formation of light products (6 < A < 31). Our analysis of the isoscaling dependence also shows a possible contribution of multifragmentation to the production of heavier nuclides, in the mass region 39 < A < 81. Comment: 16 pages, LaTeX, 6 figures, 6 tables, submitted to Yadernaya Fizika (Physics of Atimoc Nuclei)
Physics of Atomic Nuclei 06/2005; 69(9). DOI:10.1134/S1063778806090079 · 0.51 Impact Factor
Available from: nscl.msu.edu
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