EXPERIMENT INFORMATION
Space Radiation Dosimetry Aboard Cosmos 1129: U.S. Portion of the Experiment (COS 1129-14)
Species Studied
Scientific Name: Not applicable Species: Not applicable
Objectives:The purpose of this experiment was to provide a comprehensive picture of the radiation exposure experienced by the Cosmos 1129 spacecraft and its contents. The measurements included and distinguished between the low- and high-LET radiation components, and also provided an approximate determination of the neutron exposure.
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Approach:
Detectors were placed inside and outside the spacecraft hull. Included were stacks of plastic nuclear track detectors (PNTDs) for measurements of high-LET particles (Z 6), fission-foil detectors for neutron measurements, and thermoluminescent detectors (TLDs) for measurement of total doses due to charged particles and gamma rays.
Results:
The high-LET particles registered, given as Z spectra and LET spectra, were translated into rem dose as a function of LET. The total accumulated doses for the particles (LET > 100 keV/µm) were 9.9 mrem inside and 25 mrem outside the spacecraft. The thermal, resonance, and high-energy neutron doses were found to be 0.52, 7.4, and 125 mrem, respectively, and the interior TLD dose was 347 mrad. The estimated error for this value is ± 50% and results from an uncertainty in the correct background subtraction for the dosimeters due to an unexplained spurious irradiation of all the detectors.
Benton, E.V. and R.P. Henke: Radiation Exposures During Spaceflight and Their Measurement. Advances in Space Research, vol. 3, no. 8, 1983, pp. 171-185.
Benton, E.V. et al.: Space Radiation Dosimetry Aboard Cosmos 1129. Final Report of U.S. Plant and Radiation Dosimetry Experiments Flown on the Soviet Satellite Cosmos 1129. M.R. Heinrich and K.A. Souza, eds., NASA TM-81288, 1981, pp. 123-188.
Henke, R.P. et al.: A Method of Automated HZE-Particle Z-Spectra Measurement in Plastic Nuclear Track Detectors. Paper Presented at the 10th International Conference on Solid State Nuclear Track Detectors, Lyon, France, 1979.
HZE particles
Linear energy transfer (LET)
Neutrons
Protons
Radiation
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Radiation dosage
Radiation monitoring
Radiation protection
Data Availability
Archive is complete. No data sets are available for this experiment. Please
Contact LSDA if you know of available data for this investigation.
Radiation, High-energy neutrons, Detectors, nuclear emulsion stacks, 59Co activation foils, Measurement
Radiation, HZE particles, Detectors, plastic nuclear track (PNTDs, for high linear energy transfer [LET] particles), thermoluminescent (TLDs, for total dose of charged particles and gamma rays), Measurement
Radiation, Linear energy transfer (LET), Detectors, plastic nuclear track detector (PNTD) stacks, Measurement, spectra
Radiation, Neutron dose, Detectors, fission-foil , nuclear emulsion stacks, 59Co activation foils, Measurement
Radiation, shielding, Cosmos, internal, external, Plastic nuclear track detectors (PNTDs), thermoluminescent detectors (TLDs), nuclear emulsion stacks
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Radiation, tracks, Cosmos, internal, external, Plastic nuclear track detectors (PNTDs)
Mission/Study Information
Mission
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Launch/Start Date
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Landing/End Date
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Duration
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Cosmos 1129
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09/25/1979
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10/14/1979
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19 days
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Managing NASA Center
Ames Research Center (ARC)
Responsible NASA Representative
Ames Research Center LSDA Level 3
Project Manager: Helen Stewart
Institutional Support
National Aeronautics and Space Administration (NASA)
Alternate Experiment Name
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