Accession Number : AD0685241

Title :   NUCLEAR EMULSION MEASUREMENTS OF THE ASTRONAUTS' RADIATION EXPOSURE ON APOLLO VII,

Corporate Author : NAVAL AEROSPACE MEDICAL INST PENSACOLA FLA

Personal Author(s) : Schaefer,Hermann J. ; Sullivan,Jeremiah J.

Report Date : 13 FEB 1969

Pagination or Media Count : 17

Abstract : On the 10.8-day Apollo VII mission, the radiation exposure of the three astronauts was measured with small nuclear emulsion packs on chest, thigh, and ankle. Track and grain count analysis of the G.5 emulsion on the CSM pilot's chest furnished a dose of 122 millirads. The LET distribution was found to be almost similar to the one recorded on the 14-day Gemini VII mission in line with the fact that the orbital parameters of the two missions were also closely similar. The counts of proton enders in all packs showed a markedly greater uniformity in directional distribution than those on Gemini VII. Presumably, this is caused by the heavier shielding of the Apollo vehicle in connection with the greater freedom of movement of the crew in the larger ship which greatly reduce the influence of self-shielding of the body in the overall shield distribution. (Author)

Descriptors :   (*ASTRONAUTS, *RADIATION HAZARDS), EXPOSURE(PHYSIOLOGY), RADIATION MEASURING INSTRUMENTS, RADIATION DOSAGE, DOSIMETERS, PROTONS, MANNED SPACECRAFT

Subject Categories : Radiobiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE