New methods of materials irradiation with high energy (≥ 1 MeV) charged particles

Abstract

High energy charged particles (HECP) with energies more than 1 MeV are widely applied for solving many of fundamental problems in radiation physics of solid state and practical tasks of nuclear, thermonuclear and cosmic materials science as well. The following complex of methodical developments has been founded and realized up to practical use at cyclotrons U-200 and U-400 (Joint Institute for Nuclear Research, Flerov Laboratory of Nuclear Reactions, Dubna). Three methods of irradiation by charged particles, providing conditions of plan object ion doping, uniformly over their volume (plate thickness is less or equal to projective HECP range) not using absorption filters in the shape of wedge or a set of foils have been developed. A method of changing spatial position in irradiated object volume of energetic profile of ion doping providing conditions of simultaneous TEM investigation of radiation effects along energetic profile of damage and ion doping in any material has been developed. A method of multiple (by hundreds of times) spatial increase of energetic profile of charged particles on bombarded sample surface, providing conditions for experimental study of radiation effects along straggling zone of HECP by practically all nuclear-physical methods has been developed.