Quantitative relations governing the penetration of He atoms into various types of solids in the course of their plastic deformation in liquid 3He (0.6 to 1.8K) and 4He (4.2K) and dispersion in gaseous He at 300K were obtained and analyzed. Experiments were carried out on metals with different lattice types, ionic single crystals, amorphous alloys, and barite and titanium dioxide powders dispersed in helium. Curves illustrating He extraction from deformed specimens under dynamic annealing were obtained. The temperature range of He extraction was found to correlate with the melting temperature and the initial and deformed structures of a material, which determine the number and character of He traps present in the material. The dependence of He penetration intensity on the type of defects forming under plastic deformation for various materials, as well as the formation of chemical bonds of He atoms to the defected structure of these materials, was discussed.

Dynamic Diffusion of Helium into Various Types of Solids during Their Deformation and Dispersion. O.V.Klyavin, B.A.Mamyrin, L.V.Khabarin, Y.M.Chernov: Physics of the Solid State, 2005, 47[5], 863-8