Observed Intensity Ratios of the N2 1PG Bands in Aurora

  • R. L. Gattinger
  • A. Vallance Jones
Part of the Space Science Library book series (ASSL, volume 51)


In evaluating the relative importance of direct electron impact vs. cascading in the excitation of the N2 first positive (1PG) system it is necessary to measure accurately the relative intensities of bands from as many different v′ levels as possible to establish the relative populations. Gattinger and Vallance Jones (1974) have obtained measurements of the vibrational development of the system in medium intensity aurora, and have compared their results with various theoretical distributions. Vallance Jones and Gattinger (1972) made similar but less comprehensive measurements on bright aurora and arrived at ratios for I(1,0):I(2,1):I(3,2) which were quite different from those determined in the later paper (Table I).


  1. Boyd, J. S., Belon, A. E., and Romick, G. J.: 1971, J.Geophys. Res. 76, 7694.ADSCrossRefGoogle Scholar
  2. Chamberlain, J. W.: 1961, in Physics of the Aurora and Airglow, Academic Press Inc., New York, p. 129.Google Scholar
  3. Cartwright, D. C., Trajmar, S., and Williams, W.: 1973, J.Geophys. Res. 78, 2365.ADSCrossRefGoogle Scholar
  4. Gattinger, R. L. and Vallance Jones, A.: 1972, Ann. Geophys. 28, 91.Google Scholar
  5. Gattinger, R. L. and Vallance Jones, A.: 1974, Can. J. Phys. 52, 2343.ADSGoogle Scholar
  6. Vallance Jones, A. and Gattinger, R. L.: 1972, Can. J. Phys. 50, 1833.ADSCrossRefGoogle Scholar

Copyright information

© D. Reidel Publishing Company, Dordrecht, Holland 1975

Authors and Affiliations

  • R. L. Gattinger
    • 1
  • A. Vallance Jones
    • 1
  1. 1.Astrophysics BranchNational Research Council of CanadaCanada

Personalised recommendations