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《中国物理C》（英文）编辑部
2024年10月30日
Chinese Physics C> 2000, Vol. 24> Issue(6) : 528-534 

Role of Excitation Energy in Nuclear Dissociation

  •  Shanghai Institute of Nuclear Research, The Chinese Academy of Sciences, Shanghai 201800, China2 T.D.Lee Physics Laboratory, Fudan University, Shanghai 200433, China

  • The features of thermodynamics and particle emission during the disassembly of 129Xe are investigated as functions of temperature and freeze-out density in the framework of the lattice gas model. The calculation shows different temperature dependence of physical observables at different freeze-out density. In this case, the critical temperature at the phase transition depends strongly on the freeze-out density. However, a unique critical excitation energy is revealed in different freeze-out densities when the excitation energy is used as a variable instead of temperature. Moreover, the different behavior of particle emission with temperature stemming from different ρf vanishes when excitation energy replaces temperature. It indicates that the excitation energy can be seen as a basic and scalable quantity to control nuclear disassembly.
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    [1] Pcxhc,dzalla J et al. Phys. Rev. L.ett.,1995, 75:1040[2] MA丫G et al. Phys. Ixtt,1997, B390:41[3] MA Y G et al, Phys. Rev.,1995, C51;710[4] Rertsch G F. Sciences, 1997, 277:1619; Gross D H E. Phys. Rep.,1997,279:121[5] Gross D H E et al. Rep. Prog. Phys.,1990, 53:605[6] C:ifkea M L et al. Phys. Rev. Lett. .1993, 73:1590; Elliot J H et al. Phys.1996, B381:35[7] Campi X et al. Phys. Lett.,1988 , 208: 351; Bauer W et al. Phys. Rev.,1988, 038:1297[8] SA B H, Grazs D H E. Nucl. Phys,1985, A437:643; Bondorf J I' et al. Phys. Rep.,1995, 257:133; FAI G,Randnip J. Nucl. Phys.,1982, A381:557[9] YANG C N, Lee T D. Phys. Rcv,1952, 87:410[10] PAN J . Das Cupta S. Phys. Lett.,1995, B344:29; Phys. Rev.,1996, 053:1319; Phys. Rev. Lett.,1998, 811:1182[11] SU Q M, MA Y G et al. High Ener. Phys. and Nucl. Phys. (in Chinese), 2000, 24:250 (苏前敏,马余刚等.高能物理与核物理,2000,24:250)[12] LI T ct al. Phvs. Rev. Lett.,1993, 70:1924[13] Denbigh K G, Denbigh J S. Entmpy in Relation to Uncompletc Ktxrwledge, Cambridge LJniversity Press, 1985[14] LIU Lian_Shou, WU YuanFang. Multiparticle Production in High Energy Collisions. Shanghai: Shanghai Science and Technology Press(in Chinese).1985〔刘连寿.吴元芳.高能碰撞多粒子产生.上海:上海科技出版社,1985)[15] MA Y G et al. Chin. Phys. Lett.,1999, 16:256[16] MA Y G et al. Euro. Phys. J 1999, A4:217

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MA YuGang, SU QianMin, SHEN WenQing, WANG JianSong, FANG DeQing, CAI XiangZhou and ZHANG HuYong. Role of Excitation Energy in Nuclear Dissociation[J]. Chinese Physics C, 2000, 24(6): 528-534.
MA YuGang, SU QianMin, SHEN WenQing, WANG JianSong, FANG DeQing, CAI XiangZhou and ZHANG HuYong. Role of Excitation Energy in Nuclear Dissociation[J]. Chinese Physics C, 2000, 24(6): 528-534. shu
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Received: 1999-03-17
Revised: 1900-01-01
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Role of Excitation Energy in Nuclear Dissociation

    Corresponding author: MA YuGang,
  • Shanghai Institute of Nuclear Research, The Chinese Academy of Sciences, Shanghai 201800, China2 T.D.Lee Physics Laboratory, Fudan University, Shanghai 200433, China
  • Received Date: 1999-03-17
  • Accepted Date: 1900-01-01
  • Available Online: 2000-06-05

Abstract: The features of thermodynamics and particle emission during the disassembly of 129Xe are investigated as functions of temperature and freeze-out density in the framework of the lattice gas model. The calculation shows different temperature dependence of physical observables at different freeze-out density. In this case, the critical temperature at the phase transition depends strongly on the freeze-out density. However, a unique critical excitation energy is revealed in different freeze-out densities when the excitation energy is used as a variable instead of temperature. Moreover, the different behavior of particle emission with temperature stemming from different ρf vanishes when excitation energy replaces temperature. It indicates that the excitation energy can be seen as a basic and scalable quantity to control nuclear disassembly.

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