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Past and present solar radiation

Abstract

Addressed what was the extent to which asteroidal and lunar regoliths have collected and preserved, a record of the flux, energy, and compositional history of the solar wind and solar flares. The six central discussion topics were: Trapped solar wind and flare gases, tracks, and micrometeorite pits in regolith components; Comparison between lunar regolith breccias, meteoritic regolith breccias, and the lunar soil; The special role of regolith breccias and the challenge of dating their times of compaction; Implications of the data for the flux and compositional history of solar particle emission, composition, and physical mechanisms in the solar source regions, and the composition of the early nebula; How and to what extent have records of incident radiation been altered in various types of grains; Future research directions.compiled by R.O. Pepin and D.S. McKay.The need for isotopic data on refractory elements in the solar wind / Manuel, O.K. -- The reality of the secular change in solar wind nitrogen isotopes / Kerridge, J.F. -- The dating of pre-exposure times of lunar rocks and soils / Eugster, O. -- Particle track measurements in lunar regolith breccias / Blanford, G.E. -- Distribution of solar wind implanted noble gases in lunar samples / Kiko, J.; Kirsten, T

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