THE MEASUREMENT OF RADIATION EXPOSURE OF ASTRONAUTS BY RADIOCHEMICAL TECHNIQUES January 3, 1972 Through April 2, 1972

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Only two of the fecal specimens collected inflight during the Apollo 15 mission were returned for analysis. Difficulty in obtaining reasonably accurate radiation dose estimates based on the cosmogenic radionuclide content of the specimens was encountered due to the limited sampling. The concentrations of {sup 22}Na, {sup 40}K, {sup 51}Cr, {sup 59}Fe, and {sup 137}Cs are reported. The concentrations of 24 major, minor, and trace elements in these two specimens were determined. Most concentrations are typical of those observed previously. Major exceptions are extremely low values for selenium and extraordinarily high values for rare earth elements. The net {sup 210}Po ... continued below

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Brodzinski, R. L. April 15, 1972.

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Only two of the fecal specimens collected inflight during the Apollo 15 mission were returned for analysis. Difficulty in obtaining reasonably accurate radiation dose estimates based on the cosmogenic radionuclide content of the specimens was encountered due to the limited sampling. The concentrations of {sup 22}Na, {sup 40}K, {sup 51}Cr, {sup 59}Fe, and {sup 137}Cs are reported. The concentrations of 24 major, minor, and trace elements in these two specimens were determined. Most concentrations are typical of those observed previously. Major exceptions are extremely low values for selenium and extraordinarily high values for rare earth elements. The net {sup 210}Po activities in the Apollo 11 and 12 Solar Wind Composition foils and in the Apollo 8 and 12 spacecraft reflective coatings due to lunar exposure have been determined. Equilibrium concentrations of 0.082 {+-} 0.012 disintegrations cm{sup -2} sec{sup -1} of {sup 222}Rn in the lunar atmosphere and 0.0238 {+-} 0.0035 disintegrations cm{sup -2} sec{sup -1} of {sup 210}Po on the lunar surface have been calculated for Oceanus Procellarum. A summary of a paper entitled, "Radon-222 Activity at Oceanus Procellarum," and the text of a manuscript entitled, "Radon-222 in the Lunar Atmosphere," are included as appendices.

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  • Report No.: BNWL-1183-11
  • Grant Number: AT(45-1)-1830
  • DOI: 10.2172/1087353 | External Link
  • Office of Scientific & Technical Information Report Number: 1087353
  • Archival Resource Key: ark:/67531/metadc828625

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  • April 15, 1972

Added to The UNT Digital Library

  • May 19, 2016, 9:45 a.m.

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  • June 21, 2016, 9:01 p.m.

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Brodzinski, R. L. THE MEASUREMENT OF RADIATION EXPOSURE OF ASTRONAUTS BY RADIOCHEMICAL TECHNIQUES January 3, 1972 Through April 2, 1972, report, April 15, 1972; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc828625/: accessed September 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.