Isoscaling, symmetry energy and thermodynamic models
نویسندگان
چکیده
منابع مشابه
Probing the symmetry energy from the nuclear isoscaling
S. R. Souza,1,2 M. B. Tsang,3 R. Donangelo,1 W. G. Lynch,3 and A. W. Steiner3 1Instituto de Fı́sica, Universidade Federal do Rio de Janeiro Cidade Universitária, CP 68528, 21941972, Rio de Janeiro, Brazil 2Instituto de Fı́sica, Universidade Federal do Rio Grande do Sul Av. Bento Gonçalves 9500, CP 15051, 91501-970, Porto Alegre, Brazil 3Joint Institute for Nuclear Astrophysics, National Supercond...
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has been generally observed [1,2]. Here Yi(N,Z) are the fragment yield for systems i=1,2 with different neutron and proton composition. α, β are isoscaling parameters. As discussed in refs. [3-5], the isoscaling parameters and the symmetry energy coefficient are closely related. For a multifragmentation regime, as pointed out in Ref. [6], this relation is given by: ( ) ( ) T A Z a Z sym / / 4 2...
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Different statistical multifragmentation models have been used to study isoscaling, i.e., the factorization of the isotope ratios from two reactions, into fugacity terms of proton and neutron number, R21(N ,Z) 5Y 2(N ,Z)/Y 1(N ,Z)5C exp(aN1bZ). Even though the primary isotope distributions are quite different from the final distributions due to evaporation from the excited fragments, the values...
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The isoscaling properties of the primary and final products are studied via isospin dependent quantum molecular dynamics (IQMD) model and the followed sequential decay model GEMINI, respectively. It is found that the isoscaling parameters α of both primary and final products keep no significant change for light fragments, but increases with the mass for intermediate and heavy products. The dyna...
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The isoscaling properties of isotopically resolved projectile residues from peripheral collisions of Kr (25 MeV/nucleon), Ni (25 MeV/nucleon) and Xe (20 MeV/nucleon) beams on various target pairs are employed to probe the symmetry energy coefficient of the nuclear binding energy. The present study focuses on heavy projectile fragments produced in peripheral and semiperipheral collisions near th...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2008
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2008.09.004