HCl吸收光谱.pdf

JULY 1, 19Z9 PHYSICAL REVIEW VOL UME 34 ON THE ABSORPTION SPECTRUM OF HYDROGEN CHLORIDE BY CHARLEs F. MEYER AND AARQN A. LEvIN University of Michigan (Received, April 29, 1929) ABSTRACT The fundamental band and the lsarmonic band of hydrogen chloride have been measured with narrow slits. The lines of the fundamental as previously measured, have been resolved, each into two lines arising from the existence of the isotopes C135 and C13q. The relative intensities of the lines in the two series are in accord with the accepted ratio for the abundance of the isotopes. In the harmonic, a slight separation of the lines arising from the isotopes had been previously achieved by Randall and Imes. In the present work the degree of separation is greatly enchanced. Wave- number and intensity determinations for the two series of lines in each band are submitted. Figures are given representing the bands in the new form. The ratio of the intensities of the fundamental and harmonic bands, as experimentally determined, is found to be in good agreement with the computed value. ~ HE vibration-rotation spectrum of hydrogen chloride consists princi- of a fundamental band at 3.46p, and a harmonic at 1. The pally 76@. work of Randall and Imes demonstrated tha