This module contains models of the large solar particle events of
March and June 1991, including protons and heavy ions. Use it to predict
heavy-ion induced single-event upsets and dose equivalent in any orbit during
a large solar flare. It is of particular importance for SEU rate
prediction in GEO and polar orbits.
The models include the peak and average flux of these events. They are useful 90% worst-case solar events and are a good replacement for the older CREME model environments.
The June 1991 flare is a normal composition event containing higher energy (more penetrating) particles. The March 1991 flare is a heavy-ion enriched event that, under certain shielding conditions, will cause increased SEU rates. Taken together these events are representative of a wide range of flare compositions.
¹
D.L. Chenette, J.D. Tobin and S.P. Geller, CRRES/SPACERAD Heavy Ion Model
of the Environment, CHIME Version 3.5 Phillips Laboratory Rpt. PL-TR-95-2152
(10 Feb 1997)
²
D.L. Chenette, J. Chen, E. Clayton, T.G. Guzik, J.P. Wefel, M. Garcia-Munoz,
C. Lopate, K.R. Pyle, K.P. Ray, E.G. Mullen and D.A. Hardy, The CRRES/SPACERAD
Heavy Ion Model of the Environment (CHIME) for Cosmic Ray and Solar Particle
Effects on Electronic and Biological Systems in Space, IEEE Trans. Nucl. Sci.