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LONG SAMPLE HIGH SENSITIVITY CRITICAL CURRENT MEASUREMENTS UNDER STRAIN.

Author(s) : WALTERS C. R., DAVIDSON I. M., TUCK G. E.

Type of article: Article

Summary

THE EXTREME STRAIN SENSITIVITY OF THE CRITICAL CURRENT IN NIOBIUM-TIN SUPERCONDUCTORS AT HIGH FIELDS IS WELL KNOWN AND MUST BE TAKEN INTO ACCOUNT IN THE DESIGN OF HIGH FIELD MAGNETS. IN THE PAPER AN APPARATUS IS DESCRIBED IN WHICH THE SAMPLE IS ATTACHED ON THE OUTSIDE OF THE TURNS OF A VERY THICK SPIRAL SPRING SUCH THAT WHEN ONE END OF THE SPRING IS ROTATED WITH RESPECT TO THE OTHER THE OUTER SURFACE AND, THEREFORE, THE SAMPLE IS EITHER STRETCHED OR EVEN COMPRESSED. THE SAMPLE GEOMETRY OF SIX TURNS OF 40 MM DIAMETER OVER A LENGTH OF 70 MM, IS VERY SIMILAR TO THAT TYPICALLY USED IN CURRENT DENSITY/FIELD MEASUREMENTS AND USING IT STRAIN TESTS CAN SIMILARLY BE EASILY PERFORMED.

Details

  • Original title: LONG SAMPLE HIGH SENSITIVITY CRITICAL CURRENT MEASUREMENTS UNDER STRAIN.
  • Record ID : 1987-0849
  • Languages: English
  • Source: Cryogenics - vol. 26 - n. 7
  • Publication date: 1986

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