Study of Isoscaling in Projectile Fragmentation and the Nuclear Symmetry Energy Coefficient

  • The isoscaling behavior in projectile fragmentation has been systematically investigated by a modified statistical abrasion-ablation (SAA) model. The reduced isoscaling parameters are found to decrease with the excitation energy per nucleon and have no significant dependence on the size of reaction systems. Assuming a Fermi-gas behavior, the excitation energy dependence of the symmetry energy coefficients are tentatively extracted from α and β which looks consistent with the experimental data.
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  • [1] . Tsang M B et al. Phys. Rev. Lett., 2001, 86: 50232. Tsang M B et al. Phys. Rev., 2001, C64: 0416033. Botvina A S, Vlozhkin O, Trautmann W. Phys. Rev., 2002,C65: 0446104. MA Y G, SHEN W Q. Nucl. Sci. Tech., 2004, 15: 45. MA Y G et al. Phys. Rev., 2004, C69: 0646106. TIAN W D et al. Chin. Phys. Lett., 2005, 22: 3067. Fevre A L et al. Phys. Rev. Lett., 2005, 94: 1627018. Souliotis G A et al. Phys. Rev., 2006, C73: 0246069. Souliotis G A et al. Phys. Rev., 2003, C68: 02460510. Friedman W A. Phys. Rev., 2004, C69: 031601(R)11. Veselsky M, Souliotis G A, Jandel M. Phys. Rev., 2004,C69: 04460712. MA Y G et al. Phys. Rev., 2005, C72: 06460313. Brohm T, Schmidt K H. Nucl. Phys., 1994, A569: 82114. FANG D Q et al. Phys. Rev., 2000, C61: 044610; High Energy Phys. Nucl. Phys., 2000, 24: 949 (in Chinese)(方德清等. 高能物理与核物理, 2000, 24: 949)15. FANG D Q et al. Eur. Phys. J., 2001, A10: 0381
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FANG De-Qing, MA Yu-Gang, MA Chun-Wang, ZHONG Chen, CAI Xiang-Zhou, CHEN Jin-Gen, GUO Wei, SU Qian-Min, TIAN Wen-Dong, WANG Kun, YAN Ting-Zhi and SHEN Wen-Qing. Study of Isoscaling in Projectile Fragmentation and the Nuclear Symmetry Energy Coefficient[J]. Chinese Physics C, 2006, 30(S2): 274-276.
FANG De-Qing, MA Yu-Gang, MA Chun-Wang, ZHONG Chen, CAI Xiang-Zhou, CHEN Jin-Gen, GUO Wei, SU Qian-Min, TIAN Wen-Dong, WANG Kun, YAN Ting-Zhi and SHEN Wen-Qing. Study of Isoscaling in Projectile Fragmentation and the Nuclear Symmetry Energy Coefficient[J]. Chinese Physics C, 2006, 30(S2): 274-276. shu
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Received: 2006-10-18
Revised: 1900-01-01
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Study of Isoscaling in Projectile Fragmentation and the Nuclear Symmetry Energy Coefficient

    Corresponding author: FANG De-Qing,
  • Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China

Abstract: The isoscaling behavior in projectile fragmentation has been systematically investigated by a modified statistical abrasion-ablation (SAA) model. The reduced isoscaling parameters are found to decrease with the excitation energy per nucleon and have no significant dependence on the size of reaction systems. Assuming a Fermi-gas behavior, the excitation energy dependence of the symmetry energy coefficients are tentatively extracted from α and β which looks consistent with the experimental data.

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