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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 52, Iss. 6 — Jun. 1, 1962
  • pp: 643–645

Far-Ultraviolet Auroral Spectra

H. M. CROSSWHITE, E. C. ZIPF, JR., and WM. G. FASTIE  »View Author Affiliations

JOSA, Vol. 52, Issue 6, pp. 643-645 (1962)

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Further studies of the spectral data obtained in the February 1960 rocket experiment [Ann. Geophys. 17, 109 (1961)] have confirmed much of the preliminary analysis. New bands of the Lyman-Birge-Hopfield system in the 1700–2200 Å region have been identified. More precise wavelength determinations have been made, and previously indicated bands of N2 have been more positively identified. The Lyman α line of hydrogen is just detectable. The intensity distribution among the various bands during weak auroral conditions is shown to differ markedly from more intense displays. Laboratory data obtained from a microwave discharge in very pure N2 show good correlation with some features of the rocket spectra.

H. M. CROSSWHITE, E. C. ZIPF, JR., and WM. G. FASTIE, "Far-Ultraviolet Auroral Spectra," J. Opt. Soc. Am. 52, 643-645 (1962)

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  1. W. G. Fastie, H. M. Crosswhite, and T. P. Markham, Ann. Geophys. 17, 109 (1961).
  2. We are indebted to Dr. Raymond Montalbetti, Director Defense Research Northern Laboratory, for obtaining these photographs and also for obtaining ground-based auroral spectra for comparison purposes.
  3. The "rayleigh" is a unit of photon flux proposed by. D. M. Hunten, F. E. Roach, and J. W. Chamberlain [J. Atmospheric Terrest. Phys. 8, 345 (1956)] defined as 106 quanta/cm2-sec for 4π sr.

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