Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Review of Scientific Instruments
58 (1987), S. 1067-1076
ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
A number of techniques to improve the sensitivity of helium resonance magnetometers is explored. Using a mathematical model of the helium cell discharge and optical pumping process, calculations indicate that substantial gains in sensitivity of a He4 magnetometer are possible. The improvements are obtained by use of larger cells and the replacement of the lamp with a laser as the source of pump radiation. A large cell (2 in. diameter×6 in. long) magnetometer with lamp pumping is calculated to have a sensitivity of 3×10−4 γ/(Hz)1/2, a value which has been experimentally verified. The projected sensitivity of a laser-pumped magnetometer varies between 2×10−5 and 4×10−6 γ/(Hz)1/2, depending on cell size.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1139609
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