Dose estimates in a lunar shelter with regolith shielding

摘要: Abstract Beyond the Earth's atmosphere, galactic cosmic radiation (GCR) and solar energetic particles (SEPs) are a significant hazard to both manned robotic missions. For long human missions on lunar surface (months year) shelter is needed for dose mitigation emergency protection in case of events. This paper investigates interaction source protons events like those February 1956 that emitted many fewer with energies up 1000 MeV October 1989 event lower energy but higher fluence, regolith aluminum shielding shelter. The 5 m diameter has footprint 5×8 m 10 cm thick support structure, however, actual thickness could be much smaller (∼1–2 cm) depending weight piled top. shown slightly more effective than aluminum. Thus, current results still applicable thinner structure increased equivalent (or same mass) regolith. thicknesses reduce solely due below recommended by NASA astronauts 30 day-operation space (250 mSv) workers (50 mSv) determined compared. relative attenuation incident estimates inside calculated center seeking, planar, isotropic incidence protons. With seeking incidence, highest, followed lowest planar incidence.