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IIR document

Critical current degradation analysis in irradiated superconducting materials.

Number: pap. n. 086

Author(s) : SOSNOWSKI J.

Summary

Influence of the heavy ions or fast neutron irradiation on the current-voltage characteristics and critical current of high temperature superconducting materials is considered. Elaborated model based on an energy balance analysis for the system of the vortex captured on pinning centre is described and used for the critical current determination. The regular arrangement of caused by irradiation columnar type defects has been regarded. In critical current analysis has been taken into account the Lorentz force induced by current flow and elasticity energy of deformed vortex lattice, and especially nano-defects concentration and dimensions. The results of calculations indicate in which way the degradation of critical current occurs under the irradiation process. For optimally prepared tapes the irradiation leads to the decrease of critical current and appropriate change of the current-voltage characteristics. Elaborated model has been applied to the second generation tapes, while it is possible extend it also on tapes of the first generation and low temperature wires.

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Format PDF

Pages: 341-345

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Details

  • Original title: Critical current degradation analysis in irradiated superconducting materials.
  • Record ID : 30006952
  • Languages: English
  • Source: Cryogenics 2012. Proceedings of the 12th IIR International Conference: Dresden, Germany, September 11-14, 2012.
  • Publication date: 2012/09/11

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