FORBIDDEN TRANSITIONS IN DIATOMIC MOLECULES: I. THE QUADRUPOLE ROTATION–VIBRATION SPECTRUM OF H2

Abstract

Four lines of the 2–0 band and four lines of the 3–0 band of the quadrupole rotation–vibration spectrum of H₂ have been observed and measured using effective absorbing paths of 10 to 50 km. atm. From this spectrum improved values of the rotational and vibrational constants of H₂ in its electronic ground state have been obtained.