Title :
DC-SQUID magnetometer system for detecting vector value of magnetic field
Author :
Nakanishi, Masakazu ; Kasai, Naoko ; Kado, Hisashi ; Koyanagi, Masao
Author_Institution :
Electrotech. Lab., Ibaraki, Japan
fDate :
3/1/1989 12:00:00 AM
Abstract :
A vector magnetometer system for biomagnetic applications is described. The system consists of two vector magnetometers, each comprising three integrated SQUID (superconducting quantum interference device) magnetometers located perpendicularly to each other to detect three orthogonal components of the magnetic field simultaneously. The resolution of each orthogonal component is 11 fT/√Hz in the write noise region. This system has been used in magneto-cardiography and for measuring the spontaneous magnetic field from the human brain
Keywords :
SQUIDs; biological techniques and instruments; biomagnetism; magnetometers; DC-SQUID magnetometer system; biomagnetic applications; human brain; magnetic field; magneto-cardiography; orthogonal components; spontaneous magnetic field; vector value; write noise region; Biomagnetics; Conductivity; Current measurement; Laboratories; Magnetic field measurement; Magnetic fields; Niobium; SQUID magnetometers; Superconducting coils; White noise;
Journal_Title :
Magnetics, IEEE Transactions on
