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We developed a magnetic flux measurement system which is based on the binary Josephson system two years ago. After that, we continue researching on the improvement of magnetic flux measurement and start to focus on the precision measurement of the mutual inductance with the flux measurement system we built before. This paper introduces the mutual inductance measurement method which is based on the...
A new record of magnetic flux measurement of 1 Wb with the type A uncertainty of less than 1 ppm was presented, which is an improvement over the result that was achieved with our previous magnetic flux measurement circuit with Josephson system. The flux difference measured between the rectangular pulse synthesized with the Josephson system and the flux under test (around 1 Wb) is less than 4 mWb,...
Magnetic flux is the basic magnetic quantity. The measurement uncertainty of fluxmeter is usually several parts in 104. This paper proposes a new approach of magnetic flux measurement by measuring the flux difference between rectangular pulse synthesized with a binary Josephson system and the flux under test. Experimental results show that the flux measurement repeatability is several parts in 106...
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