Dynamical Study on Fusion Mechanism near Coulomb Barrier

  • The isospin dependent quantum molecular dynamics model has been further developed by considering shell effect and the fusion mechanism near Coulomb barrier is studied by using the improved model. For light reaction system, the fusion excitation function can be described very well by using the improved model, which is consistent with the experimental data. At the same time, the experimental capture cross section for heavy reaction system can be reproduced basically.Especially for the region near or below barrier, it can also be described reasonably by using the improved model. As a further test for the model,the nucleus-nucleus interaction potential is also calculated, and compared with the proximity potential as well.
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  • [1] . Oganessian Yu Ts, Utyonkoy V K, Lobanov Yu V et al.Phys. Rev., 2004, C69: R0216012. Adamian G G, Antonenko N V, Sheid W et al. Nucl. Phys.,1998, A633: 4093. Aritomo Y, Wada T, Ohta M et al. Phys. Rev., 1999, C59:7964. Zagrebaev V I, Aritomo Y, Itkis M G et al. Phys. Rev.,2001, C65: 0146075. Blocki J P, Feldmeier H, Swiatecki W J. Nucl. Phys., 1986,A459: 1456. WANG N, LI Z X, WU X Z et al. Phys. Rev., 2004, C69:0346087. WANG N, LI Z X,WU X Z. Phys. Rev., 2002, C65: 0646088. Papa M, Maruyama T, Bonasera A. Phys. Rev., 2001, C64:0246129. FENG Z Q, ZHANG F S, LI W F et al. HEP NP, 2005,29(1): 41(in Chinese)(冯兆庆,张丰收,李文飞等.高能物理与核物理,2005, 29(1):41)10. Strutinsky V M. Nucl. Phys., 1967, A95: 42011. Gherghescu R A. Phys. Rev., 2003, C67: 01430912. Brack M, Guet C, Hakansson H B. Phys. Rep., 1985, 123:27613. MyersWD, Swiatecki WJ. Phys. Rev., 2000, C62: 04461014. Trotta M, Stefanini A M, Corradi L et al. Phys. Rev., 2001,C65: R01160115. Aljuwair H A, Ledoux R J, Beckerman M et al. Phys. Rev.,1984, C30: 122316. FENG Z Q, ZHANG F S, JIN G M et al. Nucl. Phys., 2005,A750: 23217. Prokhorova E V et al. nucl-exp/030902118. SHEN W Q et al. Phys. Rev., 1987, C36: 11519. Dasgupta M et al. Nucl. Phys., 2004, A734: 14820. Nishio K et al. Phys. Rev. Lett., 2004, 93: 162701
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FENG Zhao-Qing, JIN Gen-Ming, ZHANG Feng-Shou, FU Fen and HUANG Xi. Dynamical Study on Fusion Mechanism near Coulomb Barrier[J]. Chinese Physics C, 2005, 29(12): 1157-1161.
FENG Zhao-Qing, JIN Gen-Ming, ZHANG Feng-Shou, FU Fen and HUANG Xi. Dynamical Study on Fusion Mechanism near Coulomb Barrier[J]. Chinese Physics C, 2005, 29(12): 1157-1161. shu
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Received: 2005-02-25
Revised: 1900-01-01
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Dynamical Study on Fusion Mechanism near Coulomb Barrier

    Corresponding author: FENG Zhao-Qing,
  • Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China2 Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator of Lanzhou,Lanzhou 730000,China3 Institute of Low Energy Nuclear Physics,Beijing Normal University,Beijing 100875,China4 Graduate University of Chinese Academy of Sciences,Beijing 100049,China

Abstract: The isospin dependent quantum molecular dynamics model has been further developed by considering shell effect and the fusion mechanism near Coulomb barrier is studied by using the improved model. For light reaction system, the fusion excitation function can be described very well by using the improved model, which is consistent with the experimental data. At the same time, the experimental capture cross section for heavy reaction system can be reproduced basically.Especially for the region near or below barrier, it can also be described reasonably by using the improved model. As a further test for the model,the nucleus-nucleus interaction potential is also calculated, and compared with the proximity potential as well.

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