金属晶体定体热容的非谐计算

The Anharmonic Calculation for Heat Capacity at Constant Volume of Metallic Crystals

目的 计算室温下金属晶体的定体热容 .方法 采用两类含不同高次项的非谐振子模型 ,根据非简并微扰法计算非谐项对能级的影响 .结果 理论计算值与实验值较为接近 .结论 对不同金属的晶体 。

Aim\ To calculate the heat capacity at constant volume of metal crystal at room temperature. Methods\ With non degeneracy disturbance method, calculating the effect of anharmonic term on the energy level under the framework of anharmonic oscillator contained different higher term. Results\ The result of theoretical calculating matches that of the exist experiment satisfactorily. Conclusion\ This model of anharmonic oscillator is usable.