Accession Number : AD0163965

Title :   Crystal Magnetometer and Gradiometer.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Scarzello,John F.

Report Date : 06 FEB 1973

Pagination or Media Count : 7

Abstract : The patent describes a sensor for measuring component magnetic fields using a first magnetic field to be measured, and a perpendicular second magnetic field. The fields are modulated by first and second coils individually wound around first and second nonmagnetic cores. The nonmagnetic cores are hollow and intersect. A paramagnetic crystal is located at the intersection of the cores and is oriented to provide a maximum nuclear magnetic resonance signal. In one embodiment, a magnetometer is employed which includes a sweep generator, marginal oscillator, feedback loop and the sensor for determining the magnitude of the component magnetic field to be measured. An alternative embodiment uses a sweep generator, marginal oscillator, differentiating network and the sensor for determining the point gradient of the field to be measured.

Descriptors :   (*MAGNETOMETERS, *PATENTS), MAGNETIC FIELDS, PARAMAGNETIC MATERIALS, PARAMAGNETIC RESONANCE

Subject Categories : Test Facilities, Equipment and Methods
      Magnetic & Electric Fld Detection & Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE