| タイトル | Preliminary analyses of space radiation protection for lunar base surface systems |
| 著者（英） | Townsend, Lawrence W.; Nealy, John E.; Wilson, John W. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 1989-07-01 |
| 言語 | eng |
| 内容記述 | Radiation shielding analyses are performed for candidate lunar base habitation modules. The study primarily addresses potential hazards due to contributions from the galactic cosmic rays. The NASA Langley Research Center's high energy nucleon and heavy ion transport codes are used to compute propagation of radiation through conventional and regolith shield materials. Computed values of linear energy transfer are converted to biological dose-equivalent using quality factors established by the International Commision of Radiological Protection. Special fluxes of heavy charged particles and corresponding dosimetric quantities are computed for a series of thicknesses in various shield media and are used as an input data base for algorithms pertaining to specific shielded geometries. Dosimetric results are presented as isodose contour maps of shielded configuration interiors. The dose predictions indicate that shielding requirements are substantial, and an abbreviated uncertainty analysis shows that better definition of the space radiation environment as well as improvement in nuclear interaction cross-section data can greatly increase the accuracy of shield requirement predictions. |
| NASA分類 | AEROSPACE MEDICINE |
| レポートNO | 90A27454
SAE PAPER 891487 |
| 権利 | Copyright |
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