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Heavy Ion and Electron Release Times in Solar Particle Events

Mewaldt, R. A. and Cohen, C. M. S. and Haggerty, D. K. and Gold, R. E. and Krimigis, S. M. and Leske, R. A. and Ogliore, R. C. and Roelof, E. C. and Stone, E. C. and von Rosenvinge, T. T. and Wiedenbeck, M. E. (2003) Heavy Ion and Electron Release Times in Solar Particle Events. In: Proceedings of the 28th International Cosmic Ray Conference. Vol.6. International Union of Applied Physics , Tokyo, Japan, pp. 3313-3316.

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Using data from the SIS and EPAM instruments on ACE we have measured the onset times of 6 - 88 MeV/nuc ions and 38 - 315 keV electrons in 11 solar energetic particle (SEP) events from 1997 through 2002. We find that heavy ions are generally released later than electrons, by as much as ∼50 minutes. There is an apparent correlation between the release times (and the inferred release distances) and the 3He/4He ratio.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Mewaldt, R. A.0000-0003-2178-9111
Cohen, C. M. S.0000-0002-0978-8127
Haggerty, D. K.0000-0001-6395-8943
Krimigis, S. M.0000-0003-2781-2386
Leske, R. A.0000-0002-0156-2414
Roelof, E. C.0000-0002-2270-0652
Stone, E. C.0000-0002-2010-5462
Wiedenbeck, M. E.0000-0002-2825-3128
Additional Information:Copyright Universal Academy Press Inc. Supported by NASA at Caltech (under grants NAG5- 6912 and NAG5-12929), APL, JPL, and GSFC.
Group:Space Radiation Laboratory
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Space Radiation Laboratory2003-14
Record Number:CaltechAUTHORS:20150403-101535232
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56342
Deposited By: Deborah Miles
Deposited On:05 Apr 2015 22:41
Last Modified:09 Mar 2020 13:19

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