The Johari-Goldstein Process of a Model Diatomic Molecular System in the Supercooled State

抄録

Combining the intermediate scattering function of the center of mass and that of individual atoms obtained by molecular dynamics simulation, we devise a method of analyzing the contribution of the internal motion in the relaxation process. We apply the analysis to the relaxation process of a model diatomic molecular system in the supercooled state and show that the rotational motion gives rise to the slow relaxation compatible with the Johari-Goldstein process.