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

Radiat Prot Dosimetry. 2010 Mar;138(4):295-309. doi: 10.1093/rpd/ncp265. Epub 2009 Nov 22.

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Body Burden
  • Eye / radiation effects*
  • Humans
  • Occupational Exposure
  • Phantoms, Imaging*
  • Radiometry / instrumentation*
  • Radiometry / methods
  • Skin / radiation effects*
  • Space Flight / instrumentation*
  • Space Flight / methods