Abstract
A plasma was created in a wall-stabilized cascade arc at atmospheric pressure in a mixture of argon and bromine vapors. Arc currents between 40 and 60 A were used. The spectrum of neutral bromine was recorded in the range between 3300 and 10 400 Å, applying a spectrometer of medium dispersion, equipped with an Optical Multichannel Analyzer (CCD detector). From measured line intensities, corrected for self-absorption of radiation and the life time of the corresponding upper level absolute values of transition probabilities of 5 Br I lines, were determined. For additional 28 Br I lines transition probabilities were obtained in the absolute scale too, using the measured intensities of these lines relative to selected reference lines and the determined plasma temperature. The agreement with some other experimental data determined by a shock tube experiment is unsatisfactory. The accuracy of the new data depends mainly on the accuracy of the life time data taken from the literature.
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