Hypothetical 775 AD Free Space Doses Organ doses behind 5 g cm -2 Al shielding -skin: 9 Gy-Eq (1.5) -eye lens:7 Gy-Eq (1.0) -BFO:4.1 Gy-Eq (0.25) -CNS:4.3.

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Presentation transcript:

Hypothetical 775 AD Free Space Doses Organ doses behind 5 g cm -2 Al shielding -skin: 9 Gy-Eq (1.5) -eye lens:7 Gy-Eq (1.0) -BFO:4.1 Gy-Eq (0.25) -CNS:4.3 Gy-Eq (0.5) -Heart:3.4 Gy-Eq (0.25) -Eff. Dose:4.1 Sv (≤ 1.2) These doses are likely lethal

Feb 1956 Free Space Doses Organ doses behind 5 g cm -2 Al shielding -skin: 0.42 Gy-Eq (1.5) -eye lens:0.33 Gy-Eq (1.0) -BFO:0.19 Gy-Eq (0.25) -CNS:0.20 Gy-Eq (0.5) -Heart:0.16 Gy-Eq (0.25) -Eff. Dose:0.19 Sv (≤ 0.6) These doses are below applicable NASA limits

Hypothetical 775 AD Free Space Doses Organ doses behind 40 g cm -2 Al shielding -skin: 1.5 Gy-Eq (1.5) -eye lens:1.5 Gy-Eq (1.0) -BFO:1.2 Gy-Eq (0.25) -CNS:1.3 Gy-Eq (0.5) -Heart:1.4 Gy-Eq (0.25) -Eff. Dose:1.4 Sv (≤ 1.2) Possibly lethal but certainly acute radiation syndrome effects (“radiation sickness”).

Feb 1956 Free Space Doses Organ doses behind 40 g cm -2 Al shielding -skin: 0.07 Gy-Eq (1.5) -eye lens:0.07 Gy-Eq (1.0) -BFO:0.05 Gy-Eq (0.25) -CNS:0.06 Gy-Eq (0.5) -Heart:0.05 Gy-Eq (0.25) -Eff. Dose:0.07 Sv (≤ 0.6) No real health effects