IEC 61788-7 Ed. 3.0 b:2020

Current Revision
Superconductivity - Part 7: Electronic characteristic measurements - Surface resistance of high-temperature superconductors at microwave frequencies

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Superconductivity - Part 7: Electronic characteristic measurements - Surface resistance of high-temperature superconductors at microwave frequencies

PUBLISH DATE 2020
PAGES 92

Superconductivity - Part 7: Electronic characteristic measurements - Surface resistance of high-temperature superconductors at microwave frequencies

IEC 61788-7:2020 is available as IEC 61788-7:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 61788-7:2020 describes measurement of the surface resistance (Rs) of superconductors at microwave frequencies by the standard two-resonator method. The object of measurement is the temperature dependence of Rs at the resonant frequency.

The applicable measurement range of Rs for this method is as follows:

  • Frequency: 8 GHz < f < 30 GHz
  • Measurement resolution: 0,01 mΩ at 10 GHz

The Rs data at the measured frequency, and that scaled to 10 GHz, assuming the f² rule for comparison, is reported.

This third edition cancels and replaces the second edition, published in 2006. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:

  • a) informative Annex B, relative combined standard uncertainty for surface resistance measurement has been added;
  • b) precision and accuracy statements have been converted to uncertainty;
  • c) reproducibility in surface resistance measurement has been added.
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