Abstract—

The influence of proton irradiation on the structure of Nb₃Sn superconducting materials has been investigated. The irradiation to different proton doses was performed on a cyclotron at the National Research Centre “Kurchatov Institute” (NRC KI). The Nb₃Sn samples were placed successively pairwise on the beam axis to obtain different degrees of radiation-induced damage at a specified dose. X-ray diffraction (XRD) analysis of irradiated and unirradiated samples was carried out on a synchrotron radiation source at the NRC KI. The results of studies revealed that the diffraction peaks broaden and become weaker with an increase in the concentration of radiation-induced defects. The phase compositions of the samples and dynamics of changes in the found NbO phase under irradiation have been investigated. The change in the lattice period for the irradiated samples is studied. It is shown that the lattice period increases with an increase in concentration of radiation-induced defects.

中文翻译：

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同步辐射在快粒子束辐照下研究Nb 3 Sn超导样品中的应用

摘要-

研究了质子辐照对Nb ₃ Sn超导材料结构的影响。在国家研究中心“库尔恰托夫研究所”（NRC KI）的回旋加速器上进行了不同质子剂量的辐照。铌₃Sn样品连续成对成对放置在光束轴上，以指定剂量获得不同程度的辐射诱发的损伤。在NRC KI的同步辐射源上对辐照和未辐照的样品进行X射线衍射（XRD）分析。研究结果表明，随着辐射诱发缺陷浓度的增加，衍射峰变宽并变弱。研究了样品的相组成和在辐照下发现的NbO相的变化动力学。研究了被照射样品的晶格周期的变化。结果表明，晶格周期随着辐射缺陷浓度的增加而增加。