Abstract
Laser spectroscopy measurements of the effective temperature of Ar1+ ions in the PNX-U multipole trap, in which argon plasma is ionized and heated by microwaves under electron-cyclotron-resonance conditions, are performed using a narrow-band tunable dye laser. The absorption profile of the 611.5-nm line is examined. In a microwave power range of 5–50 kW, the observed behavior of the effective temperature of argon ions T i, eff indicates an anomalous mechanism for ion heating. It is shown that certain information about the electron temperature can be deduced from measurements by the laser-induced fluorescence (LIF) technique. The measurements performed also serve to test the laser technique and apparatus that is presently being developed for diagnosing additives to the ITER divertor plasma by the LIF method.
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Translated from Fizika Plazmy, Vol. 30, No. 5, 2004, pp. 469–474.
Original Russian Text Copyright © 2004 by Moskalenko, Molodtsov, Zhil'tsov, Skovoroda, Shcheglov.
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Moskalenko, I.V., Molodtsov, N.A., Zhil'tsov, V.A. et al. Laser spectroscopy measurements of the effective temperature of argon ions in the PNX-U plasma neutralizer. Plasma Phys. Rep. 30, 432–436 (2004). https://doi.org/10.1134/1.1744952
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DOI: https://doi.org/10.1134/1.1744952