SDIO/IST Ultrashort Wavelength. Mossbauer and Gamma-Ray Studies for Grasers.

摘要

Ideas of making gamma-ray lasers and focussing gamma rays have fascinated scientists for many years. Over the past 30 years a number of important scientific and technological advances have been made which motivated me to propose the research whose results are presented here. Such developments included; the discovery of the Mossbauer Effect, the ability to fabricate perfect single crystals, the ability to structure materials on an atomic scale, the development of synchrotron radiation facilities, and the experimental realization of the consequences of the so-called dynamical theory of x-ray diffraction. Although the consequences of the dynamical theory using x radiation have been thoroughly explored, relatively little research has been done using gamma radiation. The dynamical theory predicts that radiation can pass through perfect single crystals that are 100 times thicker than one would normally expect. A specific goal of the proposed research was to search for this anomalous transmission effect using gamma radiation. This was to be accomplished by making measurements on radioactively doped single crystals. My general goal in proposing this research was to begin to provide a foundation of experimental evidence in this new field of gamma-ray optics which may lead to technical advances that parallel those in atomic, optical, and solid state physics, e.g., focusing, lasers, enhanced or inhibited spontaneous emission, coupled atom-cavity modes, and superradiance.