This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Solar Energetic Particle Event Doses in LEO: Sensitivities to Event Spectra, Orbital Parameters, and Geomagnetic Field Conditions
Technical Paper
2004-01-2325
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
This paper presents a study of the sensitivities of calculated doses to the skin, ocular lens of the eye and bone marrow, for crewmembers in low Earth orbit, to variations in solar energetic particle event fluence levels and spectral hardness, spacecraft orbital inclination, geomagnetic field storm levels (Kp index), and spacecraft shielding thickness. In general, doses increase for higher inclination orbits, for higher Kp indices, and for harder SPE spectra. The predicted doses sometimes change dramatically for even small variations in the assumed conditions. For large events in high inclination orbits, with a highly disturbed geomagnetic field, doses can be very hazardous to crews.
Authors
- Lawrence W. Townsend - Department of Nuclear Engineering, The University of Tennessee
- Thomas M. Miller - Department of Nuclear Engineering, The University of Tennessee
- Christina E. Campbell - Department of Nuclear Engineering, The University of Tennessee
- Theodore F. Nichols - Department of Nuclear Engineering, The University of Tennessee
- Jennifer L. Hoff - Department of Nuclear Engineering, The University of Tennessee
- Martin R. Williamson - Department of Nuclear Engineering, The University of Tennessee
Citation
Townsend, L., Miller, T., Campbell, C., Nichols, T. et al., "Solar Energetic Particle Event Doses in LEO: Sensitivities to Event Spectra, Orbital Parameters, and Geomagnetic Field Conditions," SAE Technical Paper 2004-01-2325, 2004, https://doi.org/10.4271/2004-01-2325.Also In
References
- Townsend L.W. Hoff J.L. Stephens D.L., Jr. Hypothetical Worst Case Solar Particle Event Doses in LEO 2004 IEEE Aerospace Conference Big Sky, MT March 6–13 2004
- Townsend L.W. Stephens D.L. Hoff J.L. Braley G.S. Moussa H.M. Worst Case Solar Energetic Particle Events for Deep Space Missions ICES Paper No. 2001-01-2330
- Stephens D. L., Jr. Townsend L. W. Hoff J. L. Interplanetary Crew Dose Estimates for Worst Case Solar Particle Events Based on Historical Data for the Carrington Flare of 1859 14th IAA Humans in Space Symposium Banff, Alberta, Canada May 18–22 2003
- Townsend L. W. Zapp E. N. Stephens D. L. Hoff J. L. Carrington Flare of 1859 as a Prototypical Worst Case Solar Energetic Event IEEE Transactions on Nuclear Science 50 2296 2300 2003
- Wilson J.W. Townsend L.W. Schimmerling W. Khandelwal G.S. Khan F. Nealy J.E. Cucinotta F.A. Simonsen L.C. Shinn J.L. Norbury J.W. Transport methods and interactions for space radiations 1991
- Billings M.P. Yucker W.R. The computerized anatomical man (CAM) model 1973
- Xapsos M.A. Barth J.L. Stassinopoulos E.G. Messenger S.R. Walters R.J. Summers P. Burke E.A. Characterizing solar proton energy spectra for radiation effects applications IEEE Transactions on Nuclear Science 47 2218 2223 2000
- Stephens D.L., Jr. Townsend L.W. Hoff J.L. Variations in Organ Doses Resulting From Different solar Energetic Particle Event Spectrum Parameterizations ICES Paper No. 2003-01-2352
- Wilson J. W. Nealy J. E. Atwell W. Cucinotta F. A. Shinn J. L. Townsend L. W. Improved Model for Solar Cosmic Ray Exposure in Manned Earth Orbital Flights NASA Technical Paper No. TP 2987 1990
- 2000