A Study of the Marton Electron Interferometer.

Abstract As geometrical electron optics developed it was realized that it would be desirable to attempt to duplicate the classic experiments of Young, Fresnel and others upon which the wave options of light was founded. There is one fundamental difficulty that hampered the work. In order to obtain sufficient penetration and freedom from stray magnetic fields, electron optical studies are usually carried out using electron energies of about 60 kev. At this energy the wave mechanical calculation yields the value 04865 A for the wave length of an electron. This extremely small wave length means that all slits and "point" sources must be scaled down by a factor of almost one hundred thousand from those of visible light.