Abstract
Effects of low dose ion irradiation on the electrical transport current properties of commercially available high-temperature superconducting, coated-conductor tapes were investigated, in view of potential applications in irradiative environments. Three different tapes, each with unique and tailored as-grown flux-pinning structures, were irradiated with Au and Ni ions at energies that provide a range of damage effects, with accumulated damage levels near that expected for conductors in, for example, a fusion reactor environment. Measurements using transport current determined the pre- and post-irradiation resistivity, critical current density, and pinning force density, yielding critical temperatures, irreversibility lines, and inferred vortex creep rates. Results show that, at the irradiation damage levels tested, any detriment to as-grown pre-irradiation properties is modest; indeed in one case already-superior pinning forces are enhanced, leading to higher critical currents.
| Original language | English |
|---|---|
| Pages (from-to) | 108-113 |
| Number of pages | 6 |
| Journal | Journal of Nuclear Materials |
| Volume | 462 |
| DOIs | |
| State | Published - Jul 1 2015 |
Funding
The Office of Fusion Energy Sciences, in the U.S. Department of Energy , provided funding for this work. Work at the University of South Alabama was also partially funded by the National Science Foundation through a grant for Research at Undergraduate Institutions (RUI). The authors are especially grateful to Alex P. Malozemoff (AMSC) and to David K. Christen (ORNL, retired) for helpful discussions and for reviewing this manuscript.
