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High Energy Ionic Charge State Composition In Recent Large Solar Energetic Particle Events

Labrador, A. W. and Leske, R. A. and Mewaldt, R. A. and Stone, E. C. and von Rosenvinge, T. T. (2003) High Energy Ionic Charge State Composition In Recent Large Solar Energetic Particle Events. In: Proceedings of the 28th International Cosmic Ray Conference. Vol.6. International Union of Applied Physics , Tokyo, Japan, pp. 3269-3272.

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The ionic charge states of solar energetic particles (SEPs) provide information on the temperature of source materials and on conditions during acceleration and transport. SAMPEX/MAST measures mean ionic charge states at > 15 MeV/nuc using the geomagnetic rigidity filter technique. Charge state measurements by MAST for gradual SEP events suggest a continuum of charge states correlated with abundance ratios for a variety of elements, similar to what is observed at lower energies. In cases where lower energy measurements are also available, the combined measurements indicate energy dependent charge states. We have completed ionic charge state measurements for 17 SEP events from solar cycle 23. We discuss the implications of our results.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Labrador, A. W.0000-0001-9178-5349
Leske, R. A.0000-0002-0156-2414
Mewaldt, R. A.0000-0003-2178-9111
Stone, E. C.0000-0002-2010-5462
Additional Information:Copyright Universal Academy Press Inc. This work was supported by NASA at Caltech (under grant NAG5-8877) and at the Goddard Space Flight Center.
Group:Space Radiation Laboratory
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory2003-40
Record Number:CaltechAUTHORS:20150403-090650084
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56333
Deposited By: Deborah Miles
Deposited On:05 Apr 2015 23:37
Last Modified:20 Feb 2020 14:33

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