Abstract
A PATROL spectrophotometer (SP3) has been operating at this Observatory for a long period to record lithium emission in twilight at 6708 Å. In spite of the high sensitivity of the instrument no lithium was recorded until a strong emission suddenly occurred on November 7. 1962, in the evening twilight. The last record before this date was made on October 19, 1962, when no emission at all was detected. In the days before and after November 7 the weather conditions were unfavourable, but in spite of this a number of good records have been received.
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STOFFREGEN, W., DERBLOM, H. & ÅNGER, B. Lithium Emission in Twilight at Uppsala during November 1962. Nature 197, 783–785 (1963). https://doi.org/10.1038/197783b0
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DOI: https://doi.org/10.1038/197783b0
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