Atomic magnetic resonance based current source

V. Ya Shifrin; C. G. Kim; P. G. Park

doi:10.1063/1.1146818

Atomic magnetic resonance based current source

V. Ya Shifrin, C. G. Kim, P. G. Park

Department of Physics and Chemistry

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

A current of 1 A has been stabilized by locking the magnetic resonance frequency of Cs atoms placed at the center of a solenoid. Two auxiliary windings are used to obtain at the center of the solenoid a field uniformity better than 0.5 ppm in a 2 cm radius sphere, in agreement with the calculations. The variations of the external field and the effect of temperature changes are compensated for by two auxiliary feedback systems using a flux gate magnetometer and an adjustment of the locking frequency, respectively. The current fluctuation, including the noise of the current measuring system is 0.1 ppm and the current drift for 6 h is less than 0.2 ppm.

Original language	English
Pages (from-to)	833-836
Number of pages	4
Journal	Review of Scientific Instruments
Volume	67
Issue number	3
DOIs	https://doi.org/10.1063/1.1146818
State	Published - Mar 1996

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abstract = "A current of 1 A has been stabilized by locking the magnetic resonance frequency of Cs atoms placed at the center of a solenoid. Two auxiliary windings are used to obtain at the center of the solenoid a field uniformity better than 0.5 ppm in a 2 cm radius sphere, in agreement with the calculations. The variations of the external field and the effect of temperature changes are compensated for by two auxiliary feedback systems using a flux gate magnetometer and an adjustment of the locking frequency, respectively. The current fluctuation, including the noise of the current measuring system is 0.1 ppm and the current drift for 6 h is less than 0.2 ppm.",

author = "Shifrin, {V. Ya} and Kim, {C. G.} and Park, {P. G.}",

year = "1996",

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AU - Kim, C. G.

AU - Park, P. G.

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AB - A current of 1 A has been stabilized by locking the magnetic resonance frequency of Cs atoms placed at the center of a solenoid. Two auxiliary windings are used to obtain at the center of the solenoid a field uniformity better than 0.5 ppm in a 2 cm radius sphere, in agreement with the calculations. The variations of the external field and the effect of temperature changes are compensated for by two auxiliary feedback systems using a flux gate magnetometer and an adjustment of the locking frequency, respectively. The current fluctuation, including the noise of the current measuring system is 0.1 ppm and the current drift for 6 h is less than 0.2 ppm.

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JO - Review of Scientific Instruments

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Atomic magnetic resonance based current source

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