The K absorption spectra of chlorine in gaseous CH₃Cl, C₂H₅Cl, CF₂Cl₂, and C₂H₃Cl

The K absorption spectra of chlorine in gaseous CH 3 Cl, C 2 H 5 Cl, CF 2 Cl 2 , and C 2 H 3 Cl were recorded with a high resolving curved crystal spectrograph using the continuous radiation of a gold anode. The background radiation accompanying the bremsstrahlung was determined quantitatively. Thus absolute absorption cross sections could be evaluated. The absorption spectra consist of a Rydberg-like series of lines in which the third and higher components are not resolved. A theory for the interpretation of X-ray absorption spectra established by Wainstein et al. (1951) is discussed with regard to the experimental spectra obtained in this investigation.