Abstract
A NEW emission line near 6708 A. has been reported recently by Delannoy and Weill1 to be present on twilight spectrograms obtained in Adélie Land, Antarctica, during October 1957. Gadsden and Salmon2 also report the appearance of the same line in twilight spectra photographed at Hallett Station, Antarctica, during August, 1958, and at Invercargill, New Zealand, on September 5, 1958. In both instances, the authors attribute the new line to resonance radiation from the 22S—22P transition in the neutral lithium atom at 6707.8 A.
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References
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BARBER, D. Origin of Upper-Atmosphere Lithium Atoms responsible for the New Twilight Airglow at 6708 A.. Nature 183, 384 (1959). https://doi.org/10.1038/183384a0
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DOI: https://doi.org/10.1038/183384a0
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