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Published June 2007 | public
Journal Article

On the Differences in Composition between Solar Energetic Particles and Solar Wind


Although the average composition of solar energetic particles (SEPs) and the bulk solar wind are similar in a number of ways, there are key differences which imply that solar wind is not the principal seed population for SEPs accelerated by coronal mass ejection (CME) driven shocks. This paper reviews these composition differences and considers the composition of other possible seed populations, including coronal material, impulsive flare material, and interplanetary CME material.

Additional Information

© 2007 Springer Science+Business Media, Inc. Received: 5 February 2007; accepted: 4 April 2007; published online: 26 May 2007. We are grateful to the local organizing committee at ISSI for their contributions to a very successful and enjoyable Symposium. This work was supported by NASA under grants NNG04GB55G, NNG04088G, and NAG5-12929.

Additional details

August 22, 2023
October 20, 2023