Examination of adhesion layer of TeO₂ film with indented platinum substrate after radiation loading by 13 MeV deuterons

In this work the influence of a corrugated surface of a Pt substrate on the quality of thermal contact of an adhesion layer with a material of different compositions of TeO₂ and Al₂O₃ when bombing a target by a 20 µA, 13.7 MeV deuteron beam has been studied. Before the irradiation a Raman spectrum of the TeO₂+4%Al₂O₃ material had a fuzzy contour, what corresponds to a polycrystalline composition or glass, but after the irradiation the spectrum has distinct Raman peaks which relate to the α-phase. In Raman spectrums for TeO₂, containing α-phase peaks, essential changes were not observed after the irradiation. However, the glassy structure was formed in the target’s central part. Studies have shown good thermal contact of TeO₂ with the surface of a Pt substrate, processed by the offered technique. It allows to manage without addition of Al₂O₃ and to carry out the target irradiation without loss of TeO₂. (authors)