Method and apparatus for measuring weak magnetic fields.

Research output: Patent

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Abstract

When measuring weak magnetic fields, a container containing a medium, such as a solution containing a stable radical, is placed in a polarising magnetic field, which is essentially at right angles to the field to be measured. The polarising field is interrupted rapidly, the interruption being preceded by the impression of a high-frequency electromagnetic signal. The frequency of the signal corresponds to the resonance frequency of the free electron spin. The frequency and amplitude of the precessing nuclei, which are a function of the strength of the measured field, are recorded by a pick-up coil.

Original languageEnglish
IPCG01R 33/ 28 A N
Patent numberWO9517684
Filing date29/06/1995
CountryInternational Bureau of the World Intellectual Property Organization (WIPO)
Priority date22/12/1993
Priority numberDK19930001431
Publication statusPublished - 29 Jun 1995

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