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Hypothetical 775 AD Free Space Doses

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.

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Hypothetical 775 AD Free Space Doses

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

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

  3. 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”).

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

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