Abstract
Various changes in the microwave absorption signals of irradiated samples of different quality YBa2Cu3O7 and Tl2CaBa2Cu2O8 target materials by lowdose (1014 n/cm2) monoenergetic neutrons have been observed and studied. The irradiation induced changes of the shape of microwave absorption lines together with transport measurements show that the low-dose irradiation in poor quality samples increases, while in good quality ones, decreases the superconducting volume fraction. Low quality (non-percolative) samples are more sensitive to irradiation than the high quality ones. These observations indicate that the consequences of irradiation are determined mainly by the preirradiation structure of the samples.
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Bódi, A.C., Csikai, J. & Kirschner, I. Low-dose irradiation effects produced by 14 MeV neutrons in different quality Y- and Tl-based high-T c ceramics. Z. Physik B - Condensed Matter 95, 181–187 (1994). https://doi.org/10.1007/BF01312190
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DOI: https://doi.org/10.1007/BF01312190