Physics
Scientific paper
Nov 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996r%26qe...39.1011k&link_type=abstract
Radiophysics and Quantum Electronics, Volume 39, Issue 11-12, pp. 1011-1014
Physics
Scientific paper
Data on the equipment mounted on board the KORONAS-I satellite and solar flux measurements in the extreme ultraviolet range (λ<130 nm) are presented. A thermoluminescent technique was used for solar ultraviolet radiometry (SUR). Vacuum ultraviolet solar spectrometry (VUSS) equipment based on the gas-photoelectron spectrometry method was employed to measure the He II 30.4 nm line in the solar spectrum. The solar flux in the region λ <130 nm was 7.5 erg·cm-2s-1 and the Lyman alpha line intensity was (3.3 3.7) · 1011 quant·cm-2s-1 in the low solar activity period from March to June 1994. The intensity of the He II (30.4 nm) line was varied in the limits of (6.0 7.5)·109 quant·cm-2s-1 from the 4 th to the 7 th of March, 1994. No intensive solar flares were registered in the observation period. An increase in the solar flux by ˜15% was observed at λ <130 nm during the B4.5 X-ray flare (June 30, 1994, 01 h 08 m UT).
Avdyushin S. I.
Boldyrev S. I.
Gonyukh D. A.
Kazachevskaya T. V.
Kopaev I. M.
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