1957/06/01 by B. P. Stoicheff
Chemistry · Earth and Planetary Sciences · Physics and Astronomy · #Advanced Chemical Physics Studies #Atmospheric Ozone and Climate #Spectroscopy and Laser Applications
paper · doi:10.1139/p57-079
crossref issued 1957/06/01 · crossref published 1957/06/01 · crossref published-print 1957/06/01 · openalex publication_date 1957/06/01 · crossref created 2011/04/24 · crossref deposited 2025/07/02 · openalex created_date 2025/10/10 · crossref indexed 2026/07/30 · openalex updated_date 2026/07/31
The pure rotational lines and the Q branch lines of the 1–0 vibrational bands of H 2 , HD, and D 2 have been photographed with a 21 ft. grating spectrograph. From these spectra, a complete set of constants for the ν = 0 and 1 levels of all three molecules have been determined. When these constants are combined with Herzberg's results of the forbidden infrared spectra of H 2 and HD they lead to improved values of the electronic ground state constants of H 2 and HD. The leading terms in the Dunham power series expansion of the potential are calculated for H 2 and HD and are found to be mutually consistent. The isotopic relations are obeyed within experimental accuracy, and the small constants D e , B e , and H e , are in agreement with values given by theoretical formulae.