Comparison of CREME Model LET Spectra with Spaceflight Dosimetry Data
- 1 January 1986
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science
- Vol. 33 (6) , 1620-1625
- https://doi.org/10.1109/tns.1986.4334652
Abstract
Galactic cosmic radiation (GCR) is an important component of the radiation dose to astronauts when Earth's magnetic shielding is low, for example, on spaceflights outside the magnetosphere and in high inclination orbits. In high inclination orbits, low energy (high LET) particles are transmitted through the field only at extreme latitudes, but can dominate the orbit-averaged dose. We have compiled existing measurements of heavy ion (HZE) doses where GCR is expected to be important: Apollo 16 and 17, Skylab, Apollo-Soyuz Test Project. The LET spectra, due to direct ionization from GCR and its nuclear fragments, for each of these missions has been estimated based on the NRL CREME environmental model and particle transport codes developed by us. The resulting comparisons validate the CREME model predictions of high-LET galactic cosmic ray fluxes to within a factor of two or three. Some systematic differences between model and data are identified.Keywords
This publication has 12 references indexed in Scilit:
- Geometric Considerations in Single Event Upset EstimationIEEE Transactions on Nuclear Science, 1985
- Propagation of heavy cosmic-ray nucleiThe Astrophysical Journal Supplement Series, 1984
- Cosmic Ray Effects on Microelectronics. Part 3. Propagation of Cosmic Rays in the AtmospherePublished by Defense Technical Information Center (DTIC) ,1984
- Neutron Generated Single-Event Upsets in the AtmosphereIEEE Transactions on Nuclear Science, 1984
- The Effects of Solar Flares on Single Event Upset RatesIEEE Transactions on Nuclear Science, 1984
- A MEASUREMENT OF COSMIC-RAY LET-SPECTRA USING A MICROPROCESSOR SUPPORTED MICROSCOPEPublished by Elsevier ,1982
- Cosmic Ray Effects on Microelectronics. Part 1. The Near-Earth Particle EnvironmentPublished by Defense Technical Information Center (DTIC) ,1981
- HZE Particle Radiation Studies Aboard Kosmos 782Health Physics, 1978
- Plastic nuclear track detector measurements of high-LET particle radiation on apollo, skylab, and ASTP space missionsNuclear Track Detection, 1977
- High LET Particle Radiation Inside Skylab (SL2) Command ModuleHealth Physics, 1975