Radiation monitoring with nuclear emulsions on Project Gemini.
II.
Results on the 14-day mission Gemini VII /
Hermann J. Schaefer and Jeremiah J. Sullivan.
Description
- Language(s)
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English
- Published
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Pensacola, Florida.: Naval Aerospace Medical Institute, Naval Aerospace Medical Center, 1967.
- Summary
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Small nuclear emulsion packs worn by the astronauts at three locations inside their space suits were evaluated by track, grain, and enders count for evaluation of LET spectrum and absorbed dose. By using G.5/K.2 emulsion pairs, a sustained resolution over the entire LET scale of protons from zero to relativistic energies was obtained. It was found that the energy dissipation centers heavily on low energies, with 40 per cent of the absorbed dose due to protons of less than 0.1 g/sq cm residual range. Total proton doses at the six locations (left and right chest, thigh pocket of each astronaut) varied from 159 to 233 millirads. The enders count was found to vary by as much as a factor of 1.35 within the same 1 by 1 1/2-inch film sheet, indicating that the radiation field within the vehicle not only varies over distances comparable to body size, but also reflects local inhomogeneities of shielding conditions on a centimeter and millimeter scale. (Author).
- Note
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"This research was conducted under contract with the Manned Spacecraft Center, National Aeronautics and Space Administration, Houston, Texas."--title page.
"Bureau of Medicine and Surgery, MFO 22.02.02-5001.38."--title page.
Joint report of the United States Naval Aerospace Medical Institute and the National Aeronautics and Space Administration.--cover.
"11 January 1967."
- Physical Description
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13 pages :
illustrations ;
28 cm.
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