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The rotational partition function relates the rotational degrees of freedom to the rotational part of the energy. == Definition == The total canonical partition function of a system of identical, noninteracting atoms or molecules can be divided into the atomic or molecular partition functions 〔Donald A. McQuarrie, ''Statistical Mechanics'', Harper \& Row, 1973 〕 . : with : Where is the degeneracy of the j'th quantum level of an individual particle, is the Boltzmann constant, and is the absolute temperature of system. for molecules, under the assumption that that total energy levels can be partitioned into its contributions from different degrees of freedom (weakly coupled degrees of freedom)〔Donald A. McQuarrie, ''ibid'' 〕 : and the number of degenerate states are given as products of the single contributions : where "trans", "ns", "rot", "vib" and "e" denotes translational, nuclear spin, rotational and vibrational contributions as well as electron excitation, the molecular partition functions : can be written as a product itself : 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「rotational partition function」の詳細全文を読む スポンサード リンク
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