Accession Number:

AD0753060

Title:

Cesium Magnetometer Development

Descriptive Note:

Technical rept. 4 Oct 1971-3 Oct 1972

Corporate Author:

SINGER CO PLEASANTVILLE NY KEARFOTT DIV

Personal Author(s):

• Simpson, James H.

Report Date:

1972-10-04

Pagination or Media Count:

67.0

Abstract:

The feasibility of building a two-cell cesium gradient magnetometer with a sensitivity of 0.1 mgamma has been demonstrated. The theory of operation of an optically pumped magnetometer has been used to determine the cell performance required to obtain a sensitivity of 0.1 mgamma. A cell development program has resulted in buffered cesium cells which exhibited signal-to-noise ratios of 100 dB 1 Hz and traverse relaxation times of about 7 ms. Unbuffered cells with signal-to-noise ratios of 85 dB and relaxation times of about 13 ms were also made. These cell performances are near, or above the theoretical requirements. Tests of a single sensor magnetometer showed a sensitivity of 1 mgamma for a 90 Hz magnetic field.

Descriptors:

• *MAGNETOMETERS
• TEST METHODS
• SENSITIVITY
• CESIUM
• FEASIBILITY STUDIES
• OPTICAL PUMPING

Subject Categories:

• Test Facilities, Equipment and Methods
• Magnetic and Electric Field Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE