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用晶格气体模型系统地研究了１２９ Ｘｅ 热发射体的轻粒子、带电粒子和中间质量碎片的发射特性，发现了在温度５ —５５ Ｍｅ Ｖ 区间，以上物理量的平均多重性和发射源的最大碎片余核及源的热激发能随温度变化的斜率存在着各自的峰值，同时它们的分布宽度（ 即涨落） 也存在着最大值．进一步研究发现在５ —５５ Ｍｅ Ｖ 区间，这些宽度随温度的变化的斜率显示了明显的不连续性．所有这些特征说明了在５ —５５ Ｍｅ Ｖ 的拐点温度处，最大的临界涨落是自发地伴随着相变和临界现象．
The emission properties of 129 Xe thermal emitters with light particles, charged particles and intermediate mass fragments were investigated systematically using a lattice gas model. It was found that the average multiplicities of the above physical quantities and the emission sources The maximum fragment residual nuclei and the source thermal excitation energy have their own peaks with the slope of the temperature variation, and their distribution widths (ie, fluctuations) also have their maximum values. Further study found that the slope of these widths with temperature showed a significant discontinuity in the range of 5-5.5 MeV. All of these features show that at the inflection point temperature of 5-5.5 MeV, the maximum critical fluctuation is spontaneously accompanied by phase transitions and critical phenomena.