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Leske et al. 1999

Leske, R.A., Mewaldt, R.A., Cohen, C.M.S., Cummings, A.C., Stone, E.C., Wiedenbeck, M.E., Christian, E.R. and von Rosenvinge, T.T. (1999). Event-to-event variations in the isotopic composition of neon in solar energetic particle events. Geophysical Research Letters 26: doi: 10.1029/1999GL900561. issn: 0094-8276.

Using the Solar Isotope Spectrometer on the Advanced Composition Explorer, we have measured the isotopic composition of neon at 24--72 MeV/nucleon in nine solar energetic particle events between 4 November 1997 and 16 November 1998. The 22Ne/20Ne ratio varies from ~0.7 to ~2 times the solar wind value from event to event, indicating significant mass fractionation in the acceleration and/or transport of these particles. The mass fractionation is strongly correlated with the Fe/O and Na/Mg element abundance ratios, suggesting that elemental and isotopic fractionation are both governed by the ionic charge to mass ratio. ¿ 1999 American Geophysical Union

BACKGROUND DATA FILES

	Abstract

Keywords
Interplanetary Physics, Energetic particles, solar, Solar Physics, Astrophysics, and Astronomy, Corona, Solar Physics, Astrophysics, and Astronomy, Flares, Solar Physics, Astrophysics, and Astronomy

Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/

Publisher
American Geophysical Union
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