Comparison of discharge lamp and laser pumped cesium magnetometers View Full Text


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Article Info

DATE

2005-05

AUTHORS

S. Groeger, A. S. Pazgalev, A. Weis

ABSTRACT

We have performed a comparison of laser (LsOPM) and lamp (LpOPM) pumped cesium vapor magnetometers. Although the LsOPM operated 50% above its shot-noise limit we found an intrinsic sensitivity of 15 fT/√Hz and 25 fT/√Hz for the LsOPM and the LpOPM, respectively. Two modes of operation, viz. the phase-stabilized and the self-oscillating modes, were investigated and found to yield a similar performance. We have compared the performance of the LsOPM and the LpOPM directly by simultaneous measurements of field fluctuations of a 2-μT magnetic field inside a multilayer magnetic shield and have used one of the magnetometers for an active field stabilization. In the stabilized mode we found a gradient instability of 25 fT within an integration time of 100 s, which represents an upper limit of the long-term stability of the magnetometers. Our research is motivated by the need for an improved control of magnetic fields and gradients in a planned neutron electric dipole experiment. More... »

PAGES

645-654

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00340-005-1773-x

DOI

http://dx.doi.org/10.1007/s00340-005-1773-x

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1045153802


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