Role of Excitation Energy in Nuclear Dissociation

MA YuGang; SU QianMin; SHEN WenQing; WANG JianSong; FANG DeQing; CAI XiangZhou; ZHANG HuYong

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

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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 ρ_f 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.

References

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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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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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 ρ_f 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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Role of Excitation Energy in Nuclear Dissociation

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