Analysis of Diffusion Constant and Non-Gaussianity near the Glass Transition Point in the Frequency Domain(General)
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概要
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A novel method is developed for estimating the diffusion constant D_c and the non-Gaussian parameter A(t) on the basis of measurement in the frequency region. This method is shown to have merits over the conventional one in which a limited time window is used. To confirm the validity of this method, it is applied to a binary soft-sphere fluid which was studied by molecular dynamics (MD) simulation. The diffusion constant D_c is determined in the region closer to the glass transition than in the conventional MD simulation. The temperature dependence of the exponent of A(t) is consistent with that predicted by the trapping diffusion model.
- 社団法人日本物理学会の論文
- 2005-07-15
著者
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Matsui Jun
Department Of Endocrinology And Metabolism Hirosaki University Graduate School Of Medicine
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Matsui Jun
Department Of Physics Kyushu University
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Odagaki Takashi
Department Of Chemistry Faculty Of Science Kyoto University
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Odagaki Takashi
Kyushu Univ. Fukuoka
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TAGAWA Fumitaka
Department of Physics, Kyushu University
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Tagawa Fumitaka
Kyushu Univ. Fukuoka
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Tagawa Fumitaka
Department Of Physics Kyushu University
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Matsui Jun
Department Of Chemical Engineering Iwate University
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