Dynamical Theory of Diffraction. I. Electron Diffraction

抄録

A quantum field theoretical method is applied to the dynamical theory of electron diffraction. It is shown by making use of a Green function which has been developed in the field of many body problems that the dispersion equation and the absorption coefficient of the dynamical theory can be obtained from the calculation of the pole of the Green function. The effective Hamiltonian which is used for the calculation of the Green function is derived by a diagram method of the Green function. The amplitude ratios of diffracted waves are given by the ratios of Fourier components of the Green function.