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Temperature and velocity measurements of argon ions by resonance fluorescence with a single mode Ar-ion-laser

P Chall, H Kempkens, J Uhlenbusch1987年Plasma Physics and Controlled FusionIF 2.2出版社

The spatial temperature distribution of the argon ions in front of the anode of a stationary hollow cathode arc was measured from the Doppler-width of the ArII-line at 488.0 nm. The radial velocities of the ions were derived from the shift of the line center. The line profiles were observed by resonance fluorescence scattering using an Ar+-laser operating at lambda 0=488.0 nm. The frequency of the single-mode laser was selected by an intracavity etalon. By tilting the etalon the laser was tuned over the gain profile. The typical ion temperatures in front of the anode are about 0.3 eV and slightly increase towards the arc column. In the anode region a strong radial ion velocity of about 1 km s-1 was detected.

日本語訳

静止ホローカソードアークの陽極前方におけるアルゴンイオンの空間温度分布を、488.0 nmにおけるArII線のドップラー幅から測定した。イオンの半径方向速度は、線中心のシフトから導出した。線プロファイルは、λ₀=488.0 nmで動作するAr⁺レーザーを用いた共鳴蛍光散乱により観測した。単一モードレーザーの周波数は、共振器内エタロンによって選択した。エタロンを傾斜させることにより、レーザーを利得プロファイル全体にわたって同調させた。陽極前方の典型的なイオン温度は約0.3 eVであり、アーク柱に向かってわずかに増加する。陽極領域では、約1 km s⁻¹の強い半径方向イオン速度が検出された。

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