Abstract
AN ionization chamber and an EUV solar blind photomultiplier were flown to an altitude of 103 km on a Dauphin rocket launched from Kourou, French Guiana (5° N; 35° E), on September 14,1971, at 0020 (local time). The ionization chamber had a 15° field of view and was filled with Cs2 with an MgF2 window; the resulting bandpass is 1150 Å–1250 Å. The photomultiplier, field of view 5°, was enclosed in a sealed box filled with O2 which transmits UV radiation only through 3 windows between 1150 Å and 1250 Å (ref. 1).
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Watanabe, K., Inn, E. C. Y., and Zelikoff, N., J. Chem. Phys., 20 (1969).
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QUESSETTE, J., MILLIER, F. & AJELLO, J. Azimuth Angle Dependence of Equatorial Ultraviolet Airglow. Nature 239, 157 (1972). https://doi.org/10.1038/239157a0
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DOI: https://doi.org/10.1038/239157a0
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