Collective Rotation Effect in Heavy Ion Collision and the Characteristics of Reaction

  • The effect of collective rotation and the reaction characteristics are studied for intermediate energy heavy ion Collision. The maximum impact parameter, the reaction centrality, the average collective rotation energy and the angular velocity,which characterize the heavy ion collisions, are deduced. For 10.6 MeV/u 84Kr+27Al→111In fission reaction, it is found that this reaction has high degree of collision centrality. the average collective rotation energy is larger than one-third of the total excitation energy, and the composite nuclear system rotates about 8.8 turns before breakup.
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  • [1] Hinde D J,Hilscher D.Rossner H et al. Phys.Rev., 1992, C45: 1229─1259 2 Thilsher D et al. Ann Phys,(paris), 1992,17:471─5523 Ikezoe H.Shikazono N, Nagame Y et al. Phys, Rev., 1990, C42:342─353 4 Lestone J P, Leigh J R, Newton J O et al.Phys. Rev. Lett., 1991, 67: 1078—1081; Nucl. Phys., 1993,A559:277─3165 Lu Zhongdao, Zhang Jigshang, Feng Renfa et al. Z. Phys., 1986, A323:477—484 6 Lu Zhongdao, Chen Bin,Zhang Jingshang et al. Phys. Rev., 1990, C42:707─7107 Lu Zhongdao, Chin J. Nucl. Phys., 1991,13:313—3168 Ye W, Shen W Q, Lu Z D et al. Z. Phys., 1997, A359:385—389 9 Ye W, Shen W Q, Lu Z D et al. High Energy Phys. and Nucl. Phys.(In Chinese), 1998; 22:265─270(叶巍、沈文庆、陆中道等.高能物理与核物理,1998,22:265—270)
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Lu Zhongdao, Ye Wei and Shen Wenqing. Collective Rotation Effect in Heavy Ion Collision and the Characteristics of Reaction[J]. Chinese Physics C, 1999, 23(10): 1010-1014.
Lu Zhongdao, Ye Wei and Shen Wenqing. Collective Rotation Effect in Heavy Ion Collision and the Characteristics of Reaction[J]. Chinese Physics C, 1999, 23(10): 1010-1014. shu
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Received: 1998-08-04
Revised: 1900-01-01
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Collective Rotation Effect in Heavy Ion Collision and the Characteristics of Reaction

    Corresponding author: Lu Zhongdao,
  • China Institute of Atomic Energy, Beijing 1034132 Institute of Nuclear Research, the Chinese Academy of Sciences, Shanghai 201800

Abstract: The effect of collective rotation and the reaction characteristics are studied for intermediate energy heavy ion Collision. The maximum impact parameter, the reaction centrality, the average collective rotation energy and the angular velocity,which characterize the heavy ion collisions, are deduced. For 10.6 MeV/u 84Kr+27Al→111In fission reaction, it is found that this reaction has high degree of collision centrality. the average collective rotation energy is larger than one-third of the total excitation energy, and the composite nuclear system rotates about 8.8 turns before breakup.

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