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Model for Cumulative Solar Heavy Ion Energy and Linear Energy Transfer Spectra

Xapsos, M. A. and Stauffer, C. and Jordan, T. and Barth, J. L. and Mewaldt, R. A. (2007) Model for Cumulative Solar Heavy Ion Energy and Linear Energy Transfer Spectra. IEEE Transactions on Nuclear Science, 54 (6, Par). pp. 1985-1989. ISSN 0018-9499. http://resolver.caltech.edu/CaltechAUTHORS:XAPieeetns07

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Abstract

A probabilistic model of cumulative solar heavy ion energy and LET spectra is developed for spacecraft design applications. Spectra are given as a function of confidence level, mission time period during solar maximum and shielding thickness. It is shown that long-term solar heavy ion fluxes exceed galactic cosmic ray fluxes during solar maximum for shielding levels of interest. Cumulative solar heavy ion fluences should therefore be accounted for in single event effects rate calculations and in the planning of space missions.


Item Type:Article
Additional Information:© Copyright 2007 IEEE. Reprinted with permission. Manuscript received July 19, 2007; revised September 6, 2007. [Posted online: 2007-12-12] This work was supported in part by the NASA Goddard Space Flight Center Core Capability Development Program and by the NASA Constellation Program. M.A. Xapsos thanks Don Reames of the NASA Goddard Space Flight Center for helpful discussion about solar heavy ion abundances.
Group:Space Radiation Laboratory
Subject Keywords:Cumulative fluence, solar heavy ion, solar particle event
Record Number:CaltechAUTHORS:XAPieeetns07
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:XAPieeetns07
Alternative URL:http://dx.doi.org/10.1109/TNS.2007.910850
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9491
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:26 Jan 2008
Last Modified:04 Mar 2013 22:47

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