Influence of field inhomogeneity in magnetic calibration coils

Calibration of magnetic field detectors in the Helmholtz coil can be performed with an absolute accuracy of some tenths of a percent. This paper presents a correction, verified experimentally, that in some cases can be of the same order of magnitude. The correction, which is due to the inhomogeneity...

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Veröffentlicht in:	IEEE transactions on instrumentation and measurement 1996-02, Vol.45 (1), p.304-306
Hauptverfasser:	Nissen, J., Paulsson, L.-E.
Format:	Artikel
Sprache:	eng
Schlagworte:	Calibration Coils Detectors Exact sciences and technology Instruments, apparatus, components and techniques common to several branches of physics and astronomy Laboratories Magnetic components, instruments and techniques Magnetic field measurement Magnetic fields Magnetic flux Magnetic flux density Magnetometers Magnetometers for magnetic field measurements Physics Protection
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Beschreibung
Zusammenfassung:	Calibration of magnetic field detectors in the Helmholtz coil can be performed with an absolute accuracy of some tenths of a percent. This paper presents a correction, verified experimentally, that in some cases can be of the same order of magnitude. The correction, which is due to the inhomogeneity of the magnetic flux density from the Helmholtz coil over the detector coil to be calibrated, is found to exceed 1 percent if the size of the Helmholtz coil is twice the size of the detector coil.
ISSN:	0018-9456 1557-9662
DOI:	10.1109/19.481353