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Technical Paper

Parametric Shielding Strategies for Jupiter Magnetospheric Missions

Trapped electron and proton spectra using the GIRE (Galileo Interim Radiation Electron) environment model were generated and used as source terms to both deterministic and Monte Carlo high energy particle transport codes to compute absorbed dose as a function of thickness for aluminum, polyethylene, and tantalum.
Technical Paper

LET Spectra of Iron Particles on A-150: Model Predictions for the CRaTER Detector

In this work we present and compare computational predictions for the LET spectra of normally incident iron particles in the A-150 material using two Monte Carlo transport codes: the 3 dimensional HETC-HEDS, and the 1-dimensional BBFRAG codes. The energies examined will range from 300 MeV/nucleon to 2 GeV/nucleon.
Technical Paper

Space Radiation Shielding strategies and Requirements for Deep Space Missions

The ultimate limitation to manned exploration of the solar system will likely be cumulative exposure of the crews to penetrating space radiations. The two major sources of these radiations during deep-space missions are solar particle events (flares) and galactic cosmic rays. Methods to estimate crew exposures and to evaluate concomitant shield requirements for these radiation sources are currently under development. Consisting of deterministic space radiation transport computer codes and accurate models of their nuclear interaction inputs, these calculational tools are employed to estimate the composition and thicknesses of candidate shield materials required for spacecraft equipment and crew protection. In this paper, the current status of model and code development is summarized, preliminary estimates of deep-space shield requirements are presented, and an assessment of radiation protection as a potential “showstopper” for manned deep-space missions will be made.