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  • Title: Determination of dose distribution of cosmic radiation behind different shielding thicknesses.
    Author: Schmidt P, Fellinger J, Hubner K.
    Journal: Int J Rad Appl Instrum D; 1990; 17(2):117-20. PubMed ID: 11537511.
    Abstract:
    Investigations are described for the determination of dose distributions of cosmic radiation behind different shielding thicknesses. For this purpose, ultra-thin thermoluminescent detectors on a base of CaF2-polytetrafluorethylene (PTFE) were prepared and arranged in a stack at the outer wall of the biosatellite Cosmos 1887. During the 13 days of flight in a near-Earth orbit, the detectors were exposed to the unshielded cosmic radiation. After the flight, the dose distribution in the stack was determined by successive evaluations of the CaF2-PTFE discs. In the upper layers of the detector arrangement, dose values up to 100 Gy were observed. The strong decrease of the dose within a few mm demonstrates that weak particle radiation is dominant in the radiation field under investigation.
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