Abstract
The adequacy of the effect of radiation exposure of different types on the same material (Pt) has been established. For this purpose, radiation defects of one type were studied using field ion microscopy (FIM). The structure of defects was studied on an atomically clean surface and in the near-surface volume of platinum after bombardment with neutrons and ion beams (E > 0.1 MeV and E = 30 keV, respectively). It is shown that the interaction of fast neutrons (E > 0, 1 MeV, F = 6.7 • 1021 m−2, F = 3.5 • 1022 m−2) with platinum leads to certain radiation damage in the volume. The same defects are observed when irradiated with Ar+ ion beams (E = 30 keV, F = 6.7 • 1020 m−2). The latter were found at a depth of about 1.5-2 nm from the irradiated surface. Thus, analog modeling of neutron and ion irradiation with a substance was performed.
Highlights
IntroductionThis work is devoted to the study of the spatial distribution of radiation damage (vacancies and their complexes) in HCC-metals (Pt) after various types of irradiation (neutron and ion beams)
This work is devoted to the study of the spatial distribution of radiation damage in HCC-metals (Pt) after various types of irradiation.Modeling of neutron irradiation by beams of positively charged ions allows solving the problem of analog modeling of various types of radiation.The main goal of this work is to experimentally determine the adequacy of the radiation exposure of different radiations to the same material (Pt) when analyzing radiation damage of the same type.For this purpose, radiation defects obtained in the material by bombardment with neutrons and ion beams (E > 0.1 MeV and E = 30 KeV, respectively) on an atomically clean surface and in the nearsurface volume of platinum were studied
For controlled removal of surface atoms by an electric field, the ionic contrast of the typical spatial distribution of radiation damage in the Pt crystal lattice after irradiation with fast neutrons is shown in figure 1
Summary
This work is devoted to the study of the spatial distribution of radiation damage (vacancies and their complexes) in HCC-metals (Pt) after various types of irradiation (neutron and ion beams). The main goal of this work is to experimentally determine the adequacy of the radiation exposure of different radiations to the same material (Pt) when analyzing radiation damage of the same type. For this purpose, radiation defects obtained in the material by bombardment with neutrons and ion beams (E > 0.1 MeV and E = 30 KeV, respectively) on an atomically clean surface and in the nearsurface volume of platinum were studied. Irradiation of needle samples certified in FIM was performed with Ar+ beams with an energy of
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