Effect of Neutron Irradiation on Critical Currents of REBaCuO Superconducting Tapes Considered for Magnets in Fusion Reactors

0490107 - FZÚ 2019 RIV US eng J - Journal Article
Jirsa, Miloš - Rameš, Michal - Ďuran, Ivan - Viererbl, L.
Effect of Neutron Irradiation on Critical Currents of REBaCuO Superconducting Tapes Considered for Magnets in Fusion Reactors.
IEEE Transactions on Applied Superconductivity. Roč. 28, č. 4 (2018), s. 1-5, č. článku 6601505. ISSN 1051-8223. E-ISSN 1558-2515
R&D Projects: GA ČR GB14-36566G
EU Projects: European Commission(XE) 633053 - EUROfusion
Institutional support: RVO:68378271 ; RVO:61389021
Keywords : critical current density * flux pinning * neutron irradiation * superconducting filaments and wires * type II superconductors
OECD category: Condensed matter physics (including formerly solid state physics, supercond.); Fluids and plasma physics (including surface physics) (UFP-V)
Impact factor: 1.692, year: 2018

Critical currents I-c of several commercial REBaCuO superconducting tapes, prepared by various producers, were tested inductively (vibrating sample magnetometer in magnetic fields up to 9 T). Measurements were performed before and after neutron irradiation. Irradiation was conducted in the LVR-15 fission reactor at the Research Centre R. ez. with doses of 1 x 10(22) m(-2) and 2.1 x 10(22) m(-2). After irradiation, we observed a slight decrease in I-c around the self-field in all tapes. At higher magnetic fields, neutron irradiation caused a large variation in I-c, with some tapes showing a strong enhancement, some tapes showing a moderate effect, whilst no effect or even an I-c degradation appeared in the remainder. The irradiation effect depended on the pinning medium, measurement temperature, and magnetic field.
Permanent Link: http://hdl.handle.net/11104/0284399