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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

  • 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 VRT. 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 VRT (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 VRT located at the maximum general pressure within two phases coexistence region.
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    [1] 张东，萨本豪，张孝泽和金星南;非常热余核系统破碎瞬时的体积效应;即将发表于高能物理与核物理.[2] Sa Ben-hao, D. H. E, Gross, Zhang Xiao-ze, Lu Zhao-qi, Zheng Yu-ming And Xu Shu-yan, in procee-dings of an international summer school, p. 427,World Scientific 1986.[3] Xiao-Ze,D.H.E. Gross,Xu Shu-yan and Zheng Yu-ming, Nucl. Phys., A461(1987), 641.[4] Zhang Xiao-ze,D.H.E.Gross Xu Shu-yan and Zheng Yu-ming, Nucl, Phys., A461(1987), 668.[5] Sa Ben-Hao and D. H. E. Gross, Nucl. Phys.,A437(1985), 643.D. H. E. Gross and Zhang Xiao-ze, Phys. Lett., 161B(1985), 47;D. H. E. Gross, Zhang Xiao-Ze and Xu Shu-Fan, Phys. Rev. Lett., 56(1986), 1544.[6] G.Baym, Physics Today No. 3, 38(1985), 40.[7] M.Fisher, Physics, 3(1967), 255.[8] H. Jaqaman, A. Z. mekiian and L. Zamick, Pnys. Rev., C27(1983), 2782.[9] H, Machner, invited lecture at the 17th Summer School on Nuclear Structure. Mikolajki, Poland, 1985.[10] B-A Li, S. Pratt and P. J Siemens, Phys. Rca., C37(1988), 1473.[11] L.E.Reichel. "A Modern Course in Statistical Pysics", University of Texas, Austin, 1980.[12] B. V.Jacak, VJ. Loveland, D. L. Morrissey, P. L. McGauohey and G. Y. Seabery. Can. J. Chain，61.(1983), 701.Y. Y. Chu, E. M. Franz, G. Friedlander and P.J.Karol, Phys. Rev，C4(1971), 2202;J. Hudis, T. Kirsten, R. W, Stoenner and O.A.Schaeffer, Phys. Rev., C1(1970), 2019.

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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
Revised: 1900-01-01
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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 VRT. 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 VRT (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 VRT located at the maximum general pressure within two phases coexistence region.

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