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Elemental and isotopic fractionation in 3He-rich solar energetic particle events

Wiedenbeck, M. E. and Leske, R. A. and Cohen, C. M. S. and Cummings, A. C. and Mewaldt, R. A. and Stone, E. C. and von Rosenvinge, T. T. (2008) Elemental and isotopic fractionation in 3He-rich solar energetic particle events. In: Particle Acceleration and Transport in the Heliosphere and Beyond: 7th Annual International Astrophysics Conference. AIP Conference Proceedings. No.1039. American Institute of Physics , Kauai, HI, pp. 149-155. ISBN 9780735405660.

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Using data from the Solar Isotope Spectrometer (SIS) on the Advanced Composition Explorer (ACE) mission, heavy ion composition measurements have been made in 26^3He-rich solar energetic particle (SEP) events that occurred between 1998 and 2004. Relative abundances of 13 elements from C through Ni have been investigated, as have the isotopic compositions of the elements Ne and Mg. We find a general tendency for the abundances to follow trends similar to those found in gradual SEP events, in which fractionation can be represented in the form of a power-law in Q/M. However several deviations from this pattern are noted that may provide useful diagnostics of the acceleration process occurring in solar flares.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Wiedenbeck, M. E.0000-0002-2825-3128
Leske, R. A.0000-0002-0156-2414
Cohen, C. M. S.0000-0002-0978-8127
Cummings, A. C.0000-0002-3840-7696
Mewaldt, R. A.0000-0003-2178-9111
Stone, E. C.0000-0002-2010-5462
Additional Information:© 2008 American Institute of Physics. This research was supported by NASA at the California Institute of Technology (grant NAG5-12929), the Jet Propulsion Laboratory, and the Goddard Space Flight Center.
Group:Space Radiation Laboratory
Funding AgencyGrant Number
Subject Keywords:solar energetic particles, solar flares, composition, isotopes
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory2008-30
Series Name:AIP Conference Proceedings
Issue or Number:1039
Classification Code:PACS: 96.50.Vg,, 96.50.Pw
Record Number:CaltechAUTHORS:20090727-132850697
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:14674
Deposited By: Ruth Sustaita
Deposited On:07 Aug 2009 23:31
Last Modified:08 Nov 2021 23:13

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