Radiation shielding design — gamma ray attenuation (buildup factor, half-value layer, tenth-value layer), neutron shielding (fast neutron moderation, thermal neutron capture), dose rate calculation (inverse square law, NCRP 151), shield materials (lead, concrete, polyethylene, water), shielding adequacy (ALARA, dose limits 10 CFR 20), skyshine and streaming, Monte Carlo shielding codes (MCNP, SCALE), medical X-ray shielding (NCRP 151), and nuclear facility shielding design.
