Electricity: measuring and testing – Magnetic – Magnetometers
Reexamination Certificate
2008-07-01
2008-07-01
Aurora, Reena (Department: 2862)
Electricity: measuring and testing
Magnetic
Magnetometers
C324S201000, C324S228000
Reexamination Certificate
active
07394246
ABSTRACT:
A superconductive quantum interference device (SQUID) system is provided for measuring the alternating current (AC) magnetic susceptibility of material at a single frequency or a mixing frequency from multiple frequencies, such as mf1+nf2, where f1and f2are two excitation frequencies of two primary coils. The system includes a magnetic-flux sourcing unit for producing an AC magnetic flux on a sample and a magnetic-flux reading unit for reading the induced magnetic flux from the sample via a magnetic flux transformer. The magnetic-flux reading unit includes a SQUID set for detecting the induced magnetic flux, so as to obtain the magnetic susceptibility of the sample in converting calculation.
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Chieh Jen-Jie
Hong Chin-Yih Rex
Horng Herng-Er
Yang Hong-Chang
Yang Shieh-Yueh
Aurora Reena
Jianq Chyun IP Office
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