Emission Band Spectra of Nitrogen. The Fifth Positive System

19 bands of the fifth positive system of nitrogen have been photographed in the second and third orders of a 21-foot grating spectrograph. Vibrational and rotational analyses gave the following results: (1) x 1Σg− state: Be=1.750, αe=0.0225, De=6×10−6, Te=a′+45284.7, ωe=1910, ωexe=20.7, re=1.168 A. (2) a′1Σu− state: Be=1.480, αe=0.0164, De=6×10−6, Te=a′, ωe=1530, ωexe=12.0, ωeye=0.033, re=1.270 A. An anomalous intensity distribution in the v′=0 bands was observed.