The detection and interpretation of the orthohelium emission at 5876 A in aurora

Details The detection and interpretation of the orthohelium emission at 5876 A in aurora The detection and interpretation of the orthohelium emission at 5876 A in aurora

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982p%26ss...30..695h&link_type=abstract

Planetary and Space Science, vol. 30, July 1982, p. 695-699.

Physics

2

Auroral Spectroscopy, Helium Ions, Airglow, Light Emission, Line Spectra, Spectrograms, Sudden Storm Commencements

Scientific paper

The implications of auroral He I emissions at 5876 A observed from space and ground-based spectrometry are discussed. Spectrophotometer measurements in a pulse-counting mode taken at 73.1 deg N 129.4 deg E geomagnetic coordinates measured orthohelium emissions at 3889 and 5876 A. The 4876 A lines possessed a 2-3 R intensity, while the 3889 A line was 15 R, with strongest enhancement during sudden commencement. The low intensity of the 5876 A line, although also measurable from spacecraft, prohibited precise line profiles from being made, but helium emissions at the two wavelengths are concluded to be inherent auroral features.

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