Estimates of hze particle contributions to spe radiation exposures on interplanetary missions
Abstract
Estimates of radiation doses resulting from possible HZE (high energy heavy ion) components of solar particle events (SPEs) are presented for crews of manned interplanetary missions. The calculations assume a model spectrum obtained by folding measured solar flare HZE particle abundances with the measured energy spectra of SPE alpha particles. These hypothetical spectra are then transported through aluminum spacecraft shielding. The results, presented as estimates of absorbed dose and dose equivalent, indicate that HZE components by themselves are not a major concern for crew protection but should be included in any overall risk assessment. The predictions are found to be sensitive to the assumed spectral hardness parameters.
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There can be very high density fluxes of protons with energies greater than 30 MeV that can be of concern to astronauts in thinly-shielded vehicles and habitats.
“Even so, there can be very high density fluxes of protons with energies greater than 30 MeV that can be of concern to astronauts in thinly-shielded vehicles and habitats [13,14].”
From Space Radiation: The number one risk to astronaut health beyond low earth orbit (2014) · cites this paper as [14]
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- Authors
- Townsend, L. W., Cucinotta, F. A., Wilson, J. W., & Bagga, R.
- Affiliations
- Langley Research Center (US)
- Old Dominion University (US)
- Venue
- Advances in Space Research
- Publisher
- Elsevier BV
- Published
- 1994-10
- Volume
- 14
- Issue
- 10
- Pages
- 671-674
- ISSN
- 0273-1177 (ISSN-L)
- OpenAlex
- W1995406645
- Cited by
- 32
- References
- 7
- Citations by year
- 2024: 11 · 2023: 2 · 2021: 4 · 2020: 1 · 2019: 1 · 2018: 4 · 2017: 1 · 2016: 1 · 2015: 1 · 2014: 1 · 2013: 1
- FWCI
- 0.42
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Advances in Space Research (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Radiation Therapy and Dosimetry
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Solar and Space Plasma Dynamics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Radiation Effects in Electronics
- Keywords
- HZE particles, solar energetic particle events, space radiation exposure, solar flares, alpha spectra, spacecraft shielding, aluminum shielding, absorbed dose, dose equivalent, radiation risk assessment, spectral hardness
- MeSH terms
- Alpha Particles, Aluminum, Bone Marrow, Computer Simulation, Cosmic Radiation, Elementary Particles, Extraterrestrial Environment, Humans, Ions, Lens, Crystalline, Models, Theoretical, Radiation Dosage, Radiation Protection, Skin, Space Flight, Solar System, Risk Assessment
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