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Critical currents in REBaCuO superconducting tapes in response to neutron irradiation
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SYSNO ASEP 0579852 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Critical currents in REBaCuO superconducting tapes in response to neutron irradiation Author(s) Jirsa, Miloš (UFP-V)
Rames, M. (CZ)
Ďuran, Ivan (UFP-V) RID, ORCID
Entler, Slavomír (UFP-V) ORCID
Viererbl, L. (CZ)Number of authors 5 Article number 055007 Source Title Superconductor Science and Technology. - : Institute of Physics Publishing - ISSN 0953-2048
Roč. 32, č. 5 (2019)Number of pages 7 s. Language eng - English Country US - United States Keywords magnetic-fields ; flux ; dependence ; thickness ; superconducting tapes ; REBaCuO ; critical currents ; induction and transport ; pinning force density ; magnetic relaxation ; neutron irradiation Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects GB14-36566G GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UFP-V - RVO:61389021 UT WOS 000518897500001 EID SCOPUS 85065824018 DOI 10.1088/1361-6668/ab099c Annotation Electromagnetic performance of superconducting REBaCuO tapes from several manufacturers was investigated in response to neutron irradiation. The aim was to test the feasibility of using these tapes for wiring high-T-c superconducting magnets for fusion reactors. Magnetic induction was employed to determine critical currents. In non-irradiated SuNAM, SuperOx, and SuperPower tapes without additional pinning centers, the normalized pinning force density as a function of the normalized magnetic field, h, exhibited the commonly observed single peak at about h = 0.2 in the whole temperature range 10 K-80 K. In the non-irradiated AP (advanced pinning) SuperPower tapes this dependence developed an extraordinary shape below 70 K. This feature changed with increasing neutron fluence. The effect of neutron irradiation on critical currents was found to be rather complex. In all samples, neutron irradiation by a total fluence of 8.03x10(22) m(-2) caused a critical current degradation at low magnetic fields in the temperature range 10 K-77 K. At high magnetic fields, the effect varied depending on the tape's initial pinning structure, temperature, and neutron fluence. At 77 K, the current decreased and the irreversibility field was reduced in all the samples. At intermediate temperatures the critical current nearly did not change, while at temperatures below 30 K the critical current increased. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2024 Electronic address https://iopscience.iop.org/article/10.1088/1361-6668/ab099c
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