液体ヘリウムのフィルムについて

抄録

By the method of helium transformation, Previously used with S.Franchetti, we have obtained more exact internal energy of the liquid helium When they are made to occupy very flat space as the excitation, we take the phonon, which is described by long wave length, and the roton part with short wave length, neglecting the excitation modes which represent the surface wave, so called “ripplon”.