Measurement of the Ar/Ca Abundance Ratio From CELIAS/MTOF in Slow and Fast Solar Wind
Abstract
We present measurements of the Ar/Ca abundance ratio in the solar wind. The results are derived from data recorded with the MTOF sensor of the CELIAS instrument on the SOHO mission. This abundance ratio combines two very different elements. Firstly, Ar is a high-FIP (First Ionization Potential) element and Ca is a low-FIP element. Secondly, Ar is a volatile element and Ca is a refractory element. The former difference is important for processes associated with the solar atmosphere (e.g., the FIP fractionation process), the latter difference is important with regard to the composition of the solar system. We shall present the Ar/Ca abundance ratio for the slow and for the fast solar wind, derived from the CELIAS/MTOF data set presently available.
- Publication:
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AGU Spring Meeting Abstracts
- Pub Date:
- May 2001
- Bibcode:
- 2001AGUSM..SH62B05W
- Keywords:
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- 2164 Solar wind plasma;
- 2169 Sources of the solar wind;
- 3662 Meteorites;
- 7511 Coronal holes