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Science 31 May 1968:
Vol. 160. no. 3831, pp. 990 - 991
DOI: 10.1126/science.160.3831.990
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Articles

Detection of Lyman-beta and Helium Resonance Radiation in the Night Sky

J. M. Young 1, G. R. Carruthers 1, J. C. Holmes 1, C. Y. Johnson 1, and N. P. Patterson 1

1 E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, D.C. 20390

A rocket-borne photometer has detected far ultraviolet night glow radiations that are identified as Lyman-beta (HI 1026 angstroms), and the helium lines at 304 or 584 angstroms, or at both. At an altitude of 227 kilometers the measured intensity for Lyman-beta was about 10 rayleighs. The discrimination characteristics of the broad-band helium radiation filter give helium line intensities, at 227 kilometers, of 4.8 and 12 rayleighs, respectively, pending identification of the wavelength of the radiation as 304 or 584 angstroms. These ultraviolet radiations appear sufficient to maintain the night E and F1 regions of the ionosphere.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Magnetoglow: A New Geophysical Resource.
C. Y. Johnson, C. Y. Johnson, J. M. Young, and J. C. Holmes (1971)
Science 171, 379-381
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Science. ISSN 0036-8075 (print), 1095-9203 (online)