Messung der Absorptionsoszillatorenstärken von Cl I-Linien im Vakuum-UV-Bereich

Abstract

The absorption oscillator strengths of 10 Cl I-lines in the wavelength region 1100—1400 A were measured in emission. The light source was a wall-stabilized cascade arc burning in argon at atmospheric pressure. To measure the curve of growth, chlorine was introduced into the arc plasma in small, defined amounts. The central intensities of optically thick lines were used as intensity standards. The particle density was determined in two different ways, with identical results obtained. Both methods do not depend on the assumption of constancy of mixture ratios nor knowledge of any transition probabilities.