Temperature effects in nuclear isoscaling
نویسندگان
چکیده
S. R. Souza,1,2 M. B. Tsang,3 B. V. Carlson,4 R. Donangelo,1,5 W. G. Lynch,3 and A. W. Steiner3 1Instituto de Fı́sica, Universidade Federal do Rio de Janeiro Cidade Universitária, CP 68528, 21941-972, 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 Superconducting Cyclotron Laboratory, and the Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA 4Departamento de Fı́sica, Instituto Tecnológico de Aeronáutica-CTA, 12228-900 São José dos Campos, Brazil 5Instituto de Fı́sica, Facultad de Ingenierı́a, Universidad de la República, Julio Herrera y Reissig 565, 11.300 Montevideo, Uruguay (Received 23 June 2009; revised manuscript received 14 August 2009; published 9 October 2009)
منابع مشابه
Conditions for Isoscaling in Nuclear Reactions
Isoscaling, where ratios of isotopes emitted from two reactions exhibit an exponential dependence on the neutron and proton number of the isotope, has been observed over a variety of reactions including evaporation, strongly damped binary collision, and multifragmentation. The conditions for isoscaling to occur as well as the conditions when isoscaling fails are investigated. Typeset using REVTEX
متن کاملProbabilistic aspects of isoscaling
The phenomenon of nuclear isoscaling is studied under the premise of probability sampling. We show that isoscaling is expected in all cases of disassembly through fair sampling, obtain exact expressions for the yield ratio R21 and further show that the previously power law observed in experimental data is only an approximation to exact expression. Comparison to percolation and experimental data...
متن کاملIsoscaling bearing information on the nuclear caloric curve
We show that the qualitative behavior of the nuclear caloric curve can be inferred from the energy dependence of the isoscaling parameters. Since there are strong indications that the latter are not distorted by the secondary decay of primary hot fragments, in contrast to other observables, this suggests that valuable information on the nuclear caloric curve may be obtained through the analysis...
متن کاملSystematic study of isoscaling behavior in projectile fragmentation by the statistical abrasion-ablation model
The isospin effect and isoscaling behavior in projectile fragmentation have been systematically investigated by a modified statistical abrasion-ablation (SAA) model. The normalized peak differences and reduced isoscaling parameters are found to decrease with (Zproj −Z)/Zproj or the excitation energy per nucleon and have no significant dependence on the size of reaction systems. Assuming a Fermi...
متن کاملHeavy-residue isoscaling as a probe of the symmetry energy of hot fragments
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...
متن کاملDynamical aspects of isoscaling
The origin and dynamical evolution of isoscaling was studied using classical molecular dynamics simulations of Ca + Ca, Ca + Ca, and Ca + Ca, at beam energies ranging from 20 MeV/A to 85 MeV/A. The analysis included a study of the time evolution of this effect. Isoscaling was observed to exist in these reactions from the very early primary isotope distributions (produced by highly non-equilibra...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2009