X-Ray Plasmon Scattering. : I. Experiment on Beryllium

概要

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Using a crystalline beryllium specimen, the excitation of plasma oscillation by X-rays was confirmed by examining the inelastic scattering for chromium Kβ_1 and copper Kβ_1 rays at various observation angles. The X-rays suffered an energy loss, which was equal to the plasmon energy of the solid and also satisfied the dispersion relation predicted by the free electron gas theory. The inelastic scattering was still observed beyond the critical angle estimated by the theory. At lower scattering angles the spectral breadth of the scattering was about 4 eV, which corresponds to the plasmon life time of 1.5×10^<-16> sec. As the angle was increased the breadth rapidly broadened and the scattering gradually disappeared.
社団法人日本物理学会の論文
1970-10-05