Diffraction of Fast Electrons After Single Plasmon Loss

Abstract

The diffraction of eigen‐loss electrons is examined in some detail. It is shown that the collision zone with a crystal is sufficiently diffused that a significant fraction (10% at E = 10⁵ V) of E₁ = E−δE electrons are produced outside the crystal boundaries. These electrons behave like an incident beam of energy E₁ and appear to be responsible for Watanabe's observations with an energy selecting electron microscope.