高温等离子体相变的热力学判据分析

Rmodynamic analysis of phase transformation in high temperature plasma

从电子的玻尔兹曼分布函数出发,理论分析了热力学平衡状态下高温等离子体中电子化学势的变化.研究结果表明,物质由气态转变为高温等离子体态不满足吉布斯自由能判据,也不属于一级相变范畴.此外,根据电子费米分布函数的热力学理论分析结果表明,高温聚变等离子体仍较好地满足经典热力学统计描述.

From the Boltzmann distribution function of electrons,the change of electron chemical potential in thermal plasma is analyzed theoretically. The results show that the transition from gaseous state to high temperature plasma state does not satisfy the Gibbs free energy criterion,also disobey the first-order phase change law.Moreover,the thermodynamics theory analysis of the electron gas that origin form the electron Fermi distribution function shows that a classical thermodynamic statistical description of the plasma is adequate,even for the high temperature nuclear fusion plasma.