| 理想气体分子的平均平动能的一种推导方法 |
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| 引用本文： | 闫岩. 理想气体分子的平均平动能的一种推导方法[J]. 山东建筑工程学院学报, 2001, 0(1) |
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| 作者姓名： | 闫岩 |
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| 作者单位： | 山东建筑工程学院基础部!山东济南250014 |
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| 摘 要： | 在量子统计中 ,对统计系综引入了密度算符 ,力学量的平均值可以利用密度算符求出。由N个分子组成的理想气体可以看成是统计系综中的正则系综 ,利用密度算符可求出理想气体分子的平均平动能的表达式 ,它与经典物理学所推导的结果是吻合的。
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| 关 键 词： | 理想气体 平均平动动能 哈密顿算符 密度矩阵 |
A deducing method of the average translational kinetic energy of the ideal gas molecules |
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| YAN Yan et al.. A deducing method of the average translational kinetic energy of the ideal gas molecules[J]. Journal of Shandong Institute of Architecture and Engineering, 2001, 0(1) |
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| Authors: | YAN Yan et al. |
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| Abstract: | In the quantum statistical theory, the density operator is introduced in the statistical system. The expectation value of an obeservable can be obtained by the use of the density operator. The ideal gas made up of N molecules can be treated as the regular system of the statistical system. The average translational kinetic energy of the ideal gas molecules can be obtained by the density operator, which has a good agreement with the result deducing from classical physics. |
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| Keywords: | ideal gas average translational kinetic energy hamiltonian operator density matrix |
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