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Examining the Abundance of Rare Elements in Solar Energetic Particle Events

Cohen, C. M. S. and Mewaldt, R. A. and Christian, E. R. and Cummings, A. C. and Leske, R. A. and Slocum, P. L. and Stone, E. C. and von Rosenvinge, T. T. and Wiedenbeck, M. E. (2001) Examining the Abundance of Rare Elements in Solar Energetic Particle Events. In: Proceedings of the 27th International Cosmic Ray Conference, 7 - 15 August 2001, Hamburg, Germany.

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Using data accumulated with the Solar Isotope Spectrometer on ACE during 27 large solar energetic pa1ticle (SEP) events the effects of charge-to-mass (Q/M) fractionation on rare elements arc examined. In an attempt to correct for these fractionation effects and obtain preliminary estimates of the coronal abundances of K, Ti, Cr, Mn, Co, Ni, Cu, and Zn, the SEP events are classified according to their Fe/Si ratio. The data from all events within an Fe/Si category are summed and the rare element abundances extracted over an energy interval of 20 to 65 MeV/nucleon. We estimated the apparent Q/M fractionation, corrected for it, and obtained initial results which are encouraging.

Item Type:Conference or Workshop Item (Paper)
Cohen, C. M. S.0000-0002-0978-8127
Mewaldt, R. A.0000-0003-2178-9111
Christian, E. R.0000-0003-2134-3937
Cummings, A. C.0000-0002-3840-7696
Leske, R. A.0000-0002-0156-2414
Stone, E. C.0000-0002-2010-5462
Wiedenbeck, M. E.0000-0002-2825-3128
Additional Information:This work was supported by NASA aL Caltech (under grant NAG5-6912), Jet Propulsion Laboratory, aod Goddard Space Flight Center.
Group:Space Radiation Laboratory
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory2003-02
Record Number:CaltechAUTHORS:20150305-131051186
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:55548
Deposited By: Deborah Miles
Deposited On:05 Mar 2015 22:21
Last Modified:09 Mar 2020 13:19

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