超导性第23部分:剩余电阻比测量腔级铌超导体的剩余电阻比

[中文适用范围]： IEC 61788-23 第 23 部分涉及腔级铌超导体剩余电阻率（RRR）测定方法的测试方法。该方法适用于 RRR 值在 150 到 600 之间的高纯度铌等级。该测试方法适用于横截面为矩形或圆形的试样，横截面积大于 1 mm² 但小于 20 mm²，且长度不小于宽度的 10 倍且不大于宽度的 25 倍（对于圆形则为直径）。 [外文原描述]： IEC 61788-23:2021 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 61788-23:2021 addresses a test method for the determination of the residual resistance ratio (RRR), rRRR, of cavity-grade niobium. This method is intended for high-purity niobium grades with 150 < rRRR < 600. The test method is valid for specimens with rectangular or round cross-section, cross-sectional area greater than 1 mm2 but less than 20 mm2, and a length not less than 10 nor more than 25 times the width or diameter.