Abstract
Absorption in nitrogen at wavelengths longer than 796A, the Worley-Jenkins Rydberg series limit 2∑g+, was found to be principally the result of band spectra, whereas below this limit continuous absorption set in, very rapidly reaching a first maximum of k=680 cm−1 near 760A and a second one near the limit of the Hopfield Rydberg series 2∑u+. From the appearance of the contour of the absorption continuum and from the intensity distribution of the preceding bands, one is led to believe that it was a composite one consisting of two ionization continua adjoining the two Rydberg series limits. The integrated absorption coefficient gave an f-value of 3.3 which was in agreement with the predicted value of 3.27 from classical electron theory. Between 796A and 661A some very large absorption coefficients were found with k=2.76×103 cm−1 because of the strong, diffuse bands in this region. Experimental results were internally consistent to about ten percent and Beer’s law was shown to be obeyed.
© 1952 Optical Society of America
Full Article | PDF ArticleMore Like This
G. L. Weissler and Po Lee
J. Opt. Soc. Am. 42(3) 200-203 (1952)
F. F. Marmo
J. Opt. Soc. Am. 43(12) 1186-1190 (1953)
Murray Zelikoff and K. Watanabe
J. Opt. Soc. Am. 43(9) 756-759 (1953)