双原分子理想气体的定容热容量的讨论

本文对双原分子理想气体的分子运动考虑其平动转动、振动、电子和原子核的运动，对各种运动计算出了相应的配分函数，通过配分函数计算了分子各运动对内能和定容热容量的贡献。最后讨论了不同温度范围内分子的各运动对定容热容量的贡献。结果表明在低温范围内振动对热容量没有贡献。在高温范围内经典统计结果于量子统计结果是一致的。

Isobaric Heat Capacity of the Diatomic Molecular Ideal gas

In this paper, the energies of all the energy levels of diatomic molecular ideal gas were discussed. The partition function of the corresponding motion was determined, and other thermodynamic functions such as the internal energy and the isobaric heat capacity were calculated from the partition function. The limiting cases of the high and low temperatures were discussed. The results show that the contribution of vibration to the heat capacity goes to zero, and at the high temperature the result coincides with the result of classical statistical physics.