IMPROVEMENT OF THE SPATIAL AMPLITUDE ISOTROPY OF A HE-4 MAGNETOMETER USING A MODULATED PUMPING BEAM

Authors
CHERON B GILLES H HAMEL J MOREAU O NOEL E
Citation
B. Cheron et al., IMPROVEMENT OF THE SPATIAL AMPLITUDE ISOTROPY OF A HE-4 MAGNETOMETER USING A MODULATED PUMPING BEAM, Journal de physique. III, 7(8), 1997, pp. 1735-1740
Citations number
13
Categorie Soggetti
Material Science","Phsycs, Fluid & Plasmas","Physics, Applied
Journal title
Journal de physique. III → ACNP
ISSN journal
11554320
Volume
7
Issue
8
Year of publication
1997
Pages
1735 - 1740
Database
ISI
SICI code
1155-4320(1997)7:8<1735:IOTSAI>2.0.ZU;2-T
Abstract
Optically pumped magnetometers are scalar magnetometers. Contrary to v ectoriel magnetometers, they measure the total magnetic field whatever the direction of the sensor. However, for some orientations of the ma gnetometer with respect to the magnetic field direction, the resonant signal vanishes and the measurement is impossible. In this paper we pr esent a simple solution to reduce the amplitude spatial anisotropy and apply it to a He-4 magnetometer developed in our Laboratory.