Deuterium synthesis during the solar flare of May 24, 1990 - GRANAT satellite observations of delayed 2.2-MeV gamma-line emission
Abstract
During a bright solar flare on May 24, 1990, strong radiation in the 2.2-MeV line was detected by the PHEBUS instrument on board the Granat observatory. The observed 2.2-MeV line emission maximum is delayed for about 100 s with respect to the emission maxima in both the 4-6 and 65-120 MeV energy ranges. The decaying 2.2-MeV line photon flux was detected for a period of more than 8 min after the 4-6 MeV intensity maximum. The 2.2-MeV line fluence throughout the flare was 345 +/- 6 photons/sq cm, which corresponds to the observed synthesis of over 3 tons of deuterium on the solar surface.
- Publication:
-
Astronomy Letters
- Pub Date:
- March 1993
- Bibcode:
- 1993AstL...19...65T
- Keywords:
-
- Deuterium;
- Gamma Ray Bursts;
- Light Curve;
- Solar Flares;
- Gamma Ray Spectra;
- Solar Flux Density;
- Solar Physics