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Passage of Fast Neutrons Through the Crystal Structure of Textured CVD Diamond

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Abstract

The passage of fast neutrons through the crystal structure of a textured diamond obtained by chemical vapor deposition (CVD diamond) is studied. Neutrons with an energy of 2.45 MeV from the DD reaction and with an average energy of about 2 MeV from the 252Cf isotope are used as neutron sources. The neutrons are detected by two independent methods: using proportional counters filled with 3Не and a paraterphenyl-based scintillation detector. The measurements show that the neutron-flux incident on the detector depends on the orientation of the target. In the case of isotropic samples containing diamond and carbon, such effects are not observed. A possible explanation for the effect is the channeling of deuterium ions and neutrons in channels of textured CVD diamond.

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ACKNOWLEDGMENTS

We are grateful to V.G. Ral’chenko for help in preparing the targets made of synthetic diamond, D.N. Sovyk and P.A. Khmel’nitskii for analysis of the target surface.

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Correspondence to A. S. Rusetsky.

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Translated by E. Smirnova

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Dalkarov, O.D., Glushkov, N.A., Negodaev, M.A. et al. Passage of Fast Neutrons Through the Crystal Structure of Textured CVD Diamond. J. Surf. Investig. 14, 226–230 (2020). https://doi.org/10.1134/S1027451020020251

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  • DOI: https://doi.org/10.1134/S1027451020020251

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