6Li from solar flares

Reuven Ramaty*, Vincent Tatischeff, J. P. Thibaud, Benzion Kozlovsky, Natalie Mandzhavidze

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


By introducing a hitherto ignored 6Li producing process, due to accelerated 3He reactions with 4He, we show that accelerated particle interactions in solar flares produce much more 6Li than 7Li. By normalizing our calculations to gamma-ray data, we demonstrate that the 6Li produced in solar flares, combined with photospheric 7Li, can account for the recently determined solar wind lithium isotopic ratio, obtained from measurements in lunar soil, provided that the bulk of the flare-produced lithium is evacuated by the solar wind. Further research in this area could provide unique information on a variety of problems, including solar atmospheric transport and mixing, solar convection and the lithium depletion issue, and solar wind and solar particle acceleration.

Original languageEnglish
Pages (from-to)L207-L210
JournalAstrophysical Journal
Issue number2 PART 2
StatePublished - 10 May 2000


  • Abundances
  • Nuclear reactions
  • Nucleosynthesis
  • Solar wind
  • Sun: Abundances
  • Sun: Flares


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