Atomic-resolution neutron holography

Atomic-resolution neutron holography can be realised by two different schem es. In the frame of the first approach a point-like source of slow neutrons is produced inside the investigated crystal. Due to the extremely large va lue of the incoherent-scattering cross-section of the proton, hydrogen atom s imbedded in a metal single-crystal lattice may serve as point-like source s when the sample is irradiated by a monochromatic beam of slow neutrons. T he second approach utilizes the registration of the interference between th e incident and scattered waves by means of a point-like detector inserted i n the lattice of the crystal under investigation. In addition, neutron-indu ced electron holography is considered. The feasibility of these ideas is di scussed.