Variation of space radiation exposure inside spherical and hemispherical geometries
| Autor: | Younes Baalla, Zi-Wei Lin, Lawrence Townsend |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Physics
Radiation business.industry Astrophysics::Instrumentation and Methods for Astrophysics Cosmic ray Space radiation Spherical shell Physics::Geophysics Dome (geology) Optics Shield Physics::Space Physics Particle Astrophysics::Earth and Planetary Astrophysics business Variation (astronomy) Instrumentation |
| Zdroj: | Radiation Measurements. 44:369-373 |
| ISSN: | 1350-4487 |
| DOI: | 10.1016/j.radmeas.2009.04.011 |
| Popis: | We calculate the space radiation exposure to blood-forming organs everywhere inside a hemispherical dome that represents a lunar habitat. We derive the analytical pathlength distribution from any point inside a hemispherical or a spherical shell. Because the average pathlength increases with the distance from the center, the center of the hemispherical dome on the lunar surface has the largest radiation exposure while locations on the inner surface of the dome have the lowest exposure. This conclusion differs from an earlier study on a hemispherical dome but agrees with another earlier study on a spherical-shell shield. We also find that the reduction in the radiation exposure from the center to the inner edge of the dome can be as large as a factor of 3 or more for the radiation from solar particle events while being smaller for the radiation from galactic cosmic rays. |
| Databáze: | OpenAIRE |
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