Abstract
Plasma temperatures of the wall-stabilized low pressure Ar-arc, which has been optimized for maximum inversion density of the Ar II 4p- 4s laser transitions (i.e.kT e≅4 eV), have been determined experimentally and compared with literature data. Ion temperature is obtained from the Doppler linewidths of Ar II transitions, which have been measured both spectroscopically and indirectly by measuring the gain of the 4880 å laser line. Neutral temperature is obtained from the Doppler linewidths of Ar-I-transitions and by relating fill pressure and calculated values of the corresponding gas density.
Ion- and neutral temperature are reported to reach values ofT i≅ 30000 K andT a≅ 25 000 K, respectively. In the range under present concern (kT e≅4 eV, 15≦jR [A cm−1]≦150)T i as well asT a is a function of the characteristic parameterjR alone (j=current density,R=tube radius).
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Wir danken Herrn Prof. Dr. K. P. Meyer für sein förderndes Interesse, Herrn Dipl.-Phys. K. Banse und Herrn J. Steinger danken wir für die hilfreiche Unterstützung bei den Experimenten. Die Arbeit wurde von der Kommission zur Förderung der wissenschaftlichen Forschung des EVD unterstützt.
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Herziger, G., Lüthi, H.R. & Seelig, W. Temperaturen in Ionenlaserplasmen. Z. Physik 264, 61–71 (1973). https://doi.org/10.1007/BF01392417
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DOI: https://doi.org/10.1007/BF01392417