7Li PRODUCTION IN SOLAR FLARES
نویسنده
چکیده
The Y ohkoh satellite has registered X-ray spectra of two solar Ñares with a linelike feature in the region 400È500 keV. Analysis shows that this feature can be interpreted as gamma-ray lines from excited 7Li and 7Be produced from a ] a reactions. The 7Li production rate in the solar atmosphere is estimated from these observations. The lower limit on the Ñare-produced 7Li abundance on the Sun is determined. This value is several times less than that obtained from optical observations of the solar atmospheric 7Li. Subject headings : nuclear reactions, nucleosynthesis, abundances È Sun: abundances È Sun: Ñares È Sun: X-rays, gamma rays
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