STP 955 resulted from a major international forum for theexchange and discussion of both the fundamental and technologicalaspects of behavior change in materials exposed to radiationenvironments. 66 papers comprise this book whose contents have beencategorized into seven distinct technical areas: radiation-induceddefects and their diffusion; neutron-induced swelling; chargeparticle-induced swelling; theory of swelling and irradiationcreep; microstructural evolution; solute segregation and phasestability; and effects of implantation.