Accession Number:

AD0613993

Title:

A NOTE ON THE INFLUENCE OF SHIELD GEOMETRY ON AIR DOSE AND TISSUE DOSE FROM PROTONS WITHIN A SPACE VEHICLE,

Descriptive Note:

Corporate Author:

NAVAL SCHOOL OF AVIATION MEDICINE PENSACOLA FLA

Personal Author(s):

Report Date:

1963-04-25

Pagination or Media Count:

18.0

Abstract:

For three typical space radiation proton spectra assuming 4 pi incidence the effect of shield geometry on the distribution of air dose within a spherical shell of uniform wall thickness and within a conical vehicle with a heavy heat shield at the base is analyzed theoretically. Highly structured dose patterns are obtained even for the completely symmetrical spherical vessel. Comparative analysis of the depth dose distribution in a tissue phantom of 30 cm diameter at two different locations in the conical vehicle shows that greatly different tissue doses can prevail at locations which show equal air doses. It is concluded that the tissue dose in the body of the astronaut cannot be accurately inferred from stationary radiation sensors, but requires instruments carried on the body. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE