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

R. A. Akhmedzhanov; L. A. Gushchin; I. V. Zelensky; A. G. Litvak; M. D. Tokman

doi:10.1063/1.2771521

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

R. A. Akhmedzhanov, L. A. Gushchin, I. V. Zelensky, A. G. Litvak, M. D. Tokman

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Abstract

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.

Original language	English
Article number	093505
Journal	Physics of Plasmas
Volume	14
Issue number	9
DOIs	https://doi.org/10.1063/1.2771521
State	Published - 2007
Externally published	Yes

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title = "Using coherent population trapping in test atoms for magnetic field measurements in toroidal plasmas",

abstract = "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.",

author = "Akhmedzhanov, {R. A.} and Gushchin, {L. A.} and Zelensky, {I. V.} and Litvak, {A. G.} and Tokman, {M. D.}",

note = "Funding Information: This work was supported by the Russian Foundation for Basic Research (Grant Nos. 04-02-17042, 06-02-17063, and 06-02-16632), RFBR NWO (Grant No. 047.016.016 (04-02-89005 NWO-{\`a}), ISTC (Grant No. A-1095), and CRDF (Grant Nos. RUP2-2843-NN-06 and RUP2-2844-NN-06). ",

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AU - Gushchin, L. A.

AU - Zelensky, I. V.

AU - Litvak, A. G.

AU - Tokman, M. D.

N1 - Funding Information: This work was supported by the Russian Foundation for Basic Research (Grant Nos. 04-02-17042, 06-02-17063, and 06-02-16632), RFBR NWO (Grant No. 047.016.016 (04-02-89005 NWO-à), ISTC (Grant No. A-1095), and CRDF (Grant Nos. RUP2-2843-NN-06 and RUP2-2844-NN-06).

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

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