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Author(s)
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Degtyarenko, P N (Kurchatov Inst., Moscow ; ITAE, Moscow) ; Ballarino, A (CERN) ; Bottura, L (CERN) ; Gavrilkin, S Yu (Lebedev Inst.) ; Flükiger, R (CERN) ; Kruglov, V S (Kurchatov Inst., Moscow ; Moscow Phys. Eng. Inst.) ; Latushkin, S T (Kurchatov Inst., Moscow) ; Ryazanov, A I (Kurchatov Inst., Moscow ; Moscow Phys. Eng. Inst.) ; Scheuerlein, C (CERN) ; Semenov, E V (Kurchatov Inst., Moscow) ; Shavkin, S V (Kurchatov Inst., Moscow) ; Spina, T (CERN) ; Unezhev, V N (Kurchatov Inst., Moscow) |
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Abstract
| Vibrating-sample magnetometry techniques has been used for investigation of the electrophysical characteristics of several types of modern commercial multistrand composite wires based on Nb$_{3}$Sn superconducting compound at temperatures that were measured 4.2, 7, and 12 K in magnetic fields up to 8 T before and after irradiation of the samples by fast (32-MeV) protons to fluences values 3 × 10$^{16}$, 1 × 10$^{17}$, 3 × 10$^{17}$, and 1 × 10$^{18}$ cm$^{–2}$. All samples irradiated to fluences values up to 1 × 10$^{17}$ cm$^{–2}$ exhibited growth of the critical current density, which was most sharply pronounced in strong magnetic fields at lower temperatures. Further irradiation to a fluence value of 1 × 10$^{18}$ cm$^{–2}$ led to decrease of the critical current density below the initial level. The critical temperature of samples monotonically decreased with increasing irradiation dose. |