alexa MOSFET dosimetry mission inside the ISS as part of the Matroshka-R experiment.


Journal of Astrophysics & Aerospace Technology

Author(s): Hallil A, Brown M, Akatov Y, Arkhangelsky V, Chernykh I,

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Abstract Radiation measurements of surface and deep organ doses were performed aboard the International Space Station, for the period of January 2006 to April 2007, using a MOSFET dosimetry system combined with the Matroshka-R spherical phantom. The averaged internal and surface dose rates are found to be 0.19 and 0.29 mGy d(-1), respectively. The levels of radiation dose to blood-forming organs (BFO) and to surface organs are compared with recommended safe limits. The maximum measured BFO dose has an average dose rate of 0.23 mGy d(-1) (84 mGy y(-1)), corresponding to 44 \% of the recommended annual limit of 0.5 Sv, for a space radiation quality factor of 2.6. The annual surface dose is found to be higher at 126 mGy, corresponding to 16 \% of the eye dose limit and to 11 \% of the skin dose limit. Doses calculated using the Spenvis software showed deviations of up to 37 \% from measurements. This article was published in Radiat Prot Dosimetry and referenced in Journal of Astrophysics & Aerospace Technology

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