EQUATION OF STATE OF HOT NUCLEI BEFORE BREAK-UP

ZHANG Dong; ZHANG Xiao-Ze; JIN Xing-Nan; SA Ben-Hao

Chinese Physics C> 1989, Vol. 13> Issue(8) : 706-713

EQUATION OF STATE OF HOT NUCLEI BEFORE BREAK-UP

Institute of Low Energy Nuclear Physics Beijing Normal UniversityInstitute of Atomic Energy,Beijing China

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Abstract：
Following the method developed by the authors,recently,the equation of state of hot nuclei(²³⁸U in concrete) before break-up was investigated numerically.The isotherms are drawn in the plan of the general pressure P versus volume V_RT. They are similar to those of Van der Waals gas.The critical temperature of phase transition should correspond to the isotherm with one turning point only.It turns out that the data of mass yield distribution can be reproduced by many pairs of parameters T and V_RT (freeze-out temperature and freeze-out volume) varying in certain range.For each isotherm (each T),the data are always best reproduced by the value of V_RT located at the maximum general pressure within two phases coexistence region.

References

[1]

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ZHANG Dong, ZHANG Xiao-Ze, JIN Xing-Nan and SA Ben-Hao. EQUATION OF STATE OF HOT NUCLEI BEFORE BREAK-UP[J]. Chinese Physics C, 1989, 13(8): 706-713.

ZHANG Dong, ZHANG Xiao-Ze, JIN Xing-Nan and SA Ben-Hao. EQUATION OF STATE OF HOT NUCLEI BEFORE BREAK-UP[J]. Chinese Physics C, 1989, 13(8): 706-713. shu

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Received: 1900-01-01
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沈阳化工大学材料科学与工程学院沈阳 110142

EQUATION OF STATE OF HOT NUCLEI BEFORE BREAK-UP

Corresponding author: ZHANG Dong,

Institute of Low Energy Nuclear Physics Beijing Normal UniversityInstitute of Atomic Energy,Beijing China

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1989-08-05

Abstract: Following the method developed by the authors,recently,the equation of state of hot nuclei(²³⁸U in concrete) before break-up was investigated numerically.The isotherms are drawn in the plan of the general pressure P versus volume V_RT. They are similar to those of Van der Waals gas.The critical temperature of phase transition should correspond to the isotherm with one turning point only.It turns out that the data of mass yield distribution can be reproduced by many pairs of parameters T and V_RT (freeze-out temperature and freeze-out volume) varying in certain range.For each isotherm (each T),the data are always best reproduced by the value of V_RT located at the maximum general pressure within two phases coexistence region.

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