COHERENCE IN NUCLEAR RADIATION AND NUCLEAR HOLOGRAPHY

摘要

The importance of coherence in the interaction of γ-radiation with nuclei is demonstrated for nuclear emission holography. Radiation, produced by a radioactive source nucleus, can go directly to a detector or can be resonantly scattered by neighbouring nuclei before going to the detector. The interference between these two processes gives rise to the holographic image. The quantum mechanical theory of emission holography with γ-radiation is sketched. An expression for the contrast function in the single scattering approximation is given and discussed. Simulations of the contrast function in case of ~(57)Fe nuclei show the feasibility of nuclear emission holography. The technique will be very useful to study small clusters of resonant nuclei.