Using coherent population trapping in test atoms for magnetic field measurements in toroidal plasmas

A way to measure the profile of the safety factor in toroidal controlled-fusion setups has been developed. The method is based on measuring the ratio of the poloidal magnetic field and the toroidal one locally, based on a modification of the optical resonance-fluorescence signal. The effect of parti...

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Veröffentlicht in:	Physics of plasmas 2007-09, Vol.14 (9), p.093505-093505-9
Hauptverfasser:	Akhmedzhanov, R. A., Gushchin, L. A., Zelensky, I. V., Litvak, A. G., Tokman, M. D.
Format:	Artikel
Sprache:	eng
Schlagworte:	70 PLASMA PHYSICS AND FUSION TECHNOLOGY ATOMS LASER RADIATION LASERS MAGNETIC FIELDS MODIFICATIONS ORIENTATION PLASMA PLASMA CONFINEMENT PLASMA DIAGNOSTICS RESONANCE FLUORESCENCE TOROIDAL CONFIGURATION TRAPPING ZEEMAN EFFECT
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container_end_page	093505-9
container_issue	9
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container_title	Physics of plasmas
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creator	Akhmedzhanov, R. A. Gushchin, L. A. Zelensky, I. V. Litvak, A. G. Tokman, M. D.
description	A way to measure the profile of the safety factor in toroidal controlled-fusion setups has been developed. The method is based on measuring the ratio of the poloidal magnetic field and the toroidal one locally, based on a modification of the optical resonance-fluorescence signal. The effect of partial suppression of resonance fluorescence is used, which depends on the orientation of the magnetic field relative to the laser beam, and takes place in case of coherent population trapping in test atoms with the Zeeman split-level structure, as affected by double-frequency laser radiation.
doi_str_mv	10.1063/1.2771521
format	Article
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The method is based on measuring the ratio of the poloidal magnetic field and the toroidal one locally, based on a modification of the optical resonance-fluorescence signal. The effect of partial suppression of resonance fluorescence is used, which depends on the orientation of the magnetic field relative to the laser beam, and takes place in case of coherent population trapping in test atoms with the Zeeman split-level structure, as affected by double-frequency laser radiation.</abstract><cop>United States</cop><pub>American Institute of Physics</pub><doi>10.1063/1.2771521</doi><tpages>9</tpages></addata></record>
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subjects	70 PLASMA PHYSICS AND FUSION TECHNOLOGY ATOMS LASER RADIATION LASERS MAGNETIC FIELDS MODIFICATIONS ORIENTATION PLASMA PLASMA CONFINEMENT PLASMA DIAGNOSTICS RESONANCE FLUORESCENCE TOROIDAL CONFIGURATION TRAPPING ZEEMAN EFFECT
title	Using coherent population trapping in test atoms for magnetic field measurements in toroidal plasmas
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