Blistering and helium accumulation in pure metals tungsten, molybdenum and in austenitic C0.12Cr18Ni10Ti steel induced by the low-energy alpha-particles irradiation
The results of comparative studies of the surface structure and the accumulation of helium in the austenitic steel C0.12Cr18Ni10Ti, in molybdenum and tungsten subjected to irradiation with alpha-particles with an energy of 45 keV to fluences 10<sup>18</sup>-1.5×10<sup>18</sup> cm<sup>-2</sup> at a temperature of <200 °C, are presented in this work. It is shown that irradiation up to the fluence 10<sup>18</sup> cm<sup>-2</sup> leads to the blisters on the surface of steel, molybdenum and tungsten. Significant part of the blisters in steel and tungsten reaches the sizes of tens microns and they are open on the surface. The size of blisters on the surface of molybdenum does not exceed 100 nm and they are not open on the surface. Based on the results of thermal desorption, a mechanism is proposed for the accumulation and output of steel, molybdenum and tungsten.