Radiation effects in neutron-irradiated molybdenum studied by gamma-resonance and positron methods

The effect of ionizing radiation on various physical and mechanical properties of Mo has been investigated usually by conventional methods such as X-ray diffraction analysis, residual electrical resistance, mechanical testing, electron microscopy and others. However, for objective estimation of the postirradiation state, information on atomic and subatomic levels is required and it must be kept in mind that the results of macroscopic and microscopic methods may sometimes differ considerably one from another. Consequently, methods comparable in terms of their selectivity and enabling us to derive complementary data on the same or similar physical phenomena, must be chosen. In this work, to study the radiation damage of Mo, neutron-irradiated at 350 K by 1018 - 1020 cm-2 fluences, gamma-resonance and positron spectroscopy methods are used. (author)