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Experiment S009: Nuclear EmulsionThe first exposure on a spacecraft of a nuclear emulsion apparatus designed to collect 1000 high quality tracks of heavy nuclei under a negligible thickness of matter (0.07 g/sq cm) is described. The cosmic ray detector consisted of a stack of nuclear emulsions that were designed to register at least 400 heavy nuclei tracks for each 10 hours of useful exposure. The spacecraft had to be oriented in a heads-up attitude during the 10-hour period to eliminate atmospheric albedo particles. The results are as follows: (1) a definite odd-even effect, with low abundances for elements of atomic number 7, 9, and 11; (2) a ratio O/C approximately 0.9; (3) Ne/C, Mg/C, and Si/C ratios between 0.2 and 0.3; (4) an abundance gap in the region 15 less than or equal to Z less than or equal to 19; and (5) a ratio (20 less than or equal to Z less than or equal to 28)/C 0.2, with a large concentration at Z = 26. These results are indicative that successful exposures of nuclear emulsions were obtained on the Gemini 11 mission.
Document ID
19720003224
Document Type
Other
Authors
Odell, F. W. (Naval Research Lab. Washington, DC, United States)
Shapiro, M. M. (Naval Research Lab. Washington, DC, United States)
Silberberg, R. (Naval Research Lab. Washington, DC, United States)
Stiller, B. (Naval Research Lab. Washington, DC, United States)
Tsao, C. H. (Naval Research Lab. Washington, DC, United States)
Durgaprasad, N. (NASA Goddard Space Flight Center)
Fichtel, C. E. (NASA Goddard Space Flight Center)
Guss, D. E. (NASA Goddard Space Flight Center)
Reames, D. V. (NASA Goddard Space Flight Center)
Date Acquired
August 6, 2013
Publication Date
September 1, 1971
Publication Information
Publication: NASA. Manned Spacecraft Center The Gemini Program: Phys. Sci. Expt. Sum.
Subject Category
SPACE RADIATION
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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