Abstract

By measuring the absorption of dilute aqueous solutions of KI with various known amounts of pure iodine added, the present writers have observed that the absorption coefficient at a wavelength of about 350 mμ is nearly proportional to the amount of iodine in the solution. Making use of this fact, the amount of excess iodine in additively V-colored KI crystal has been obtained. Taking into account that two iodine atoms are associated with a V2 center, the oscillator strength of the absorption band at 365 mμ has been estimated to be 1.10±0.16 by the Smakula formula.

© 1957 Optical Society of America

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