Einfluß der Bestrahlung mit hochenergetischen Sauerstoffionen auf die kritische Stromdichte supraleitender Nb3Sn-Schichten |
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Authors: | G Ischenko H Mayer H Voit B Besslein E Haindl |
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Institution: | 1. Physikalisches Institut der Universit?t Erlangen-Nürnberg, Erlangen
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Abstract: | Nb3Sn diffusion layers were irradiated with 24 MeV oxygen ions at fluences from 3.2×1013 up to 1.6×1015 cm?2. The enhancement of the superconducting critical current density Δj c has been measured as a function of fluence and of the external magnetic fieldH a(j c⊥H a). The thermal annealing treatment of the defects concerning thej c and induced by irradiation, has been investigated in the temperature region from 200 to 800 °C. The results are compared with the measurements of irradiation of Nb3Sn with protons and deuterons. The measured data are discussed in connection with size of defects, cluster distance, fluxline distance and pinning-force. |
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