Non-additive Intermolecular Potential in Gases : I. van der Waals Interactions
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概要
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The potential energy of van der Waals interactions between three spherically symmetric atoms at large separations has been investigated both by perturbation theory and by variation method. Without using any particular atomic models the van der Waals interaction is derived, from second and third-order perturbations, in the form [numerical formula] where γ_<ij> is the distance between i th and j th atoms, θi's are inner angles of a triangle formed by the three atoms. An approximate relation between u and v is found by variation method: [numerical formula] in which [numerical formula] α_i being the polarizability of the i th atom. In case three atoms are identical the relation reduces to 4_v=3_<αu>. The accuracy of this simple relation is sufficient; for example the error is 1.8% for atomic hydrogen. The relation will be applied in a subsequent paper to the equation of state of rare gases.
- 社団法人日本物理学会の論文
- 1956-10-05
著者
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KIHARA Taro
Department of Physics, Faculty of Science, University of Tokyo
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Midzuno Yukio
Department Of Physics Faculty Of Science University Of Tokyo
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Kihara Taro
Department Of Physics Faculty Of Science University Of Tokyo
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Kihara Taro
Department Of Physics Faculity Of Science University Of Tokyo
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Midzuno Yukio
Department of Electrical Engineering, Faculty of Engineering, Shizuoka University, Hamamatsu 432
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