Erkki Aalto

• Measured and predicted neutron fluxes in, and leakage through, a configuration of perforated Fe plates in D₂O
• Measured and predicted variations in fast neutron spectrum in massive shields of water and concrete
• Measured and predicted variations in fast neutron spectrum when penetrating laminated Fe-D₂O
• On the absolute and relative accuracy obtainable by some methods when predicting neutron and gamma ray attenuation and fast neutron spectrum in reactor shields