Research/Patents/US 5189368
US 5189368

MAGNETOMETER

Assignee

Filed

Sep 24, 1976

Granted

Feb 23, 1993

Location

NH US

Abstract

A magnetometer is desclosed in which a gas cell containing atomic vapor is pulse pumped at one of the transitions of the gas in the cell. After the pulse has passed through the gas cell, thereby causing alignment of all the individual atomic moments along the propagation direction of the pulse, a probe beam reads out the Larmor precession frequency of the freely precessing atoms in terms of the frequency of the amplitude modulation of the probe beam caused by the free precession within the gas cell. The system is suitable for laboratory measurements of the absolute value of a magnetic field and for packaging in an expendable battery powered water-born buoy becuase of the low power consumption of the subject system.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Oct 1, 1982

Rescinded

Jun 16, 1992

Duration

9 years, 8 months

Inventor

  • 1WALTER E. CHASE

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records