Experimental evidences of a first-order phase transition from a superfluid to a non-interacting Fermi gas system are studied for 97,98Mo isotopes. The experimental observations are compared with the semi-empirical macroscopic model and superfluid formalism. We have shown that the entropy excess ratio introduced in our previous publications within the superfluid model can describe the first-order phase transition due to pair-breaking in atomic nuclei.

中文翻译：

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97,98Mo 同位素的一级相变

研究了从超流体到非相互作用费米气体系统的一级相变的实验证据97,98钼同位素。实验观察结果与半经验宏观模型和超流体形式进行了比较。我们已经证明，在我们以前的出版物中引入的超流体模型中的熵过剩率可以描述由于原子核中的对破裂而导致的一级相变。