EXTERNAL GAMMA RADIATION
Graph 1
GAMMA DOSE RATES ON THE ISLAND OF RONGELAP
MILLIROENTGENS PER HOUR
100
10
1.0
Gammo Dose Rotes Three Feet Above Ground on Island of Rongelap,
‘——- —<= Theoretical Decay According to (Time)”!+2 (Starting D + 1 days).
eascsceee Estimated From Reletive Theoreticol Gamma Dose Rotes, Decay
Rotes of Fission Products, Energy of the Gammas, ond the Number
of Gomme Fhotons Per Disintegration.
1.0
10
100
TIME AFTER DETONATION (Doys)