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Title: Projectile fragmentation of {sup 40,48}Ca and isotopic scaling in a transport approach

Abstract

We investigate theoretically projectile fragmentation in reactions of {sup 40,48}Ca on {sup 9}Be and {sup 181}Ta targets using a Boltzmann-type transport approach, which is supplemented by a statistical decay code to describe the de-excitation of the hot primary fragments. We determine the thermodynamical properties of the primary fragments and calculate the isotope distributions of the cold final fragments. These describe the data reasonably well. For the pairs of projectiles with different isotopic content we analyze the isotopic scaling (or isoscaling) of the final fragment distributions, which has been used to extract the symmetry energy of the primary source. The calculation exhibits isoscaling behavior for the total yields as do the experiments. We also perform an impact-parameter-dependent isoscaling analysis in view of the fact that the primary systems at different impact parameters have very different properties. Then the isoscaling behavior is less stringent, which we can attribute to specific structure effects of the {sup 40,48}Ca pair. The symmetry energy determined in this way depends on these structure effects.

Authors:
; ;  [1];  [2];  [3]
  1. Joint Institute for Nuclear Research (Russian Federation)
  2. Laboratori Nazionali del Sud, INFN (Italy)
  3. University of Munich, Faculty of Physics (Germany)
Publication Date:
OSTI Identifier:
22612635
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Atomic Nuclei; Journal Volume: 79; Journal Issue: 4; Other Information: Copyright (c) 2016 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; BERYLLIUM 9 TARGET; BOLTZMANN EQUATION; CALCIUM 40 REACTIONS; CALCIUM 48 REACTIONS; DE-EXCITATION; IMPACT PARAMETER; ISOTOPE RATIO; NUCLEAR FRAGMENTATION; SCALING; TANTALUM 181 TARGET; TRANSPORT THEORY

Citation Formats

Mikhailova, T. I., E-mail: tmikh@jinr.ru, Erdemchimeg, B., Artukh, A. G., Toro, M. Di, and Wolter, H. H. Projectile fragmentation of {sup 40,48}Ca and isotopic scaling in a transport approach. United States: N. p., 2016. Web. doi:10.1134/S1063778816040165.
Mikhailova, T. I., E-mail: tmikh@jinr.ru, Erdemchimeg, B., Artukh, A. G., Toro, M. Di, & Wolter, H. H. Projectile fragmentation of {sup 40,48}Ca and isotopic scaling in a transport approach. United States. doi:10.1134/S1063778816040165.
Mikhailova, T. I., E-mail: tmikh@jinr.ru, Erdemchimeg, B., Artukh, A. G., Toro, M. Di, and Wolter, H. H. 2016. "Projectile fragmentation of {sup 40,48}Ca and isotopic scaling in a transport approach". United States. doi:10.1134/S1063778816040165.
@article{osti_22612635,
title = {Projectile fragmentation of {sup 40,48}Ca and isotopic scaling in a transport approach},
author = {Mikhailova, T. I., E-mail: tmikh@jinr.ru and Erdemchimeg, B. and Artukh, A. G. and Toro, M. Di and Wolter, H. H.},
abstractNote = {We investigate theoretically projectile fragmentation in reactions of {sup 40,48}Ca on {sup 9}Be and {sup 181}Ta targets using a Boltzmann-type transport approach, which is supplemented by a statistical decay code to describe the de-excitation of the hot primary fragments. We determine the thermodynamical properties of the primary fragments and calculate the isotope distributions of the cold final fragments. These describe the data reasonably well. For the pairs of projectiles with different isotopic content we analyze the isotopic scaling (or isoscaling) of the final fragment distributions, which has been used to extract the symmetry energy of the primary source. The calculation exhibits isoscaling behavior for the total yields as do the experiments. We also perform an impact-parameter-dependent isoscaling analysis in view of the fact that the primary systems at different impact parameters have very different properties. Then the isoscaling behavior is less stringent, which we can attribute to specific structure effects of the {sup 40,48}Ca pair. The symmetry energy determined in this way depends on these structure effects.},
doi = {10.1134/S1063778816040165},
journal = {Physics of Atomic Nuclei},
number = 4,
volume = 79,
place = {United States},
year = 2016,
month = 7
}
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