Improvement of resistance ratio bridge using cryogenic current comparator by operating with low-noise voltage amplifier using superconducting quantum interference device for low resistance measurements

被引:1
|
作者
Nakanishi, Masakazu [1 ]
机构
[1] Natl Inst Adv Ind Sci & Technol, Metrol Inst Japan, Tsukuba, Ibaraki 3058563, Japan
关键词
cryogenic current comparator; CCC bridge; superconducting quantum interference device; SQUID voltage; amplifier; resistance ratio measurement;
D O I
10.1143/JJAP.46.3670
中图分类号
O59 [应用物理学];
学科分类号
摘要
We improved a resistance ratio bridge using a cryogenic current comparator (CCC bridge) for low-resistance measurement by operated with a laboratory-developed low-noise voltage amplifier using a superconducting quantum interference device (SQUID voltage amplifier). The combined uncertainty of the resistance ratio measurement of 10 m Omega/1 Omega was evaluated to be about 0.03 ppm.
引用
收藏
页码:3670 / 3672
页数:3
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