MOSFET dosimetry mission inside the ISS as part of the Matroshka-R experiment.
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.
Hallil
A
A
Best Medical Canada, 413 March Road, Ottawa, ON, K2K0E4, Canada. ahallil@teambest.com
Brown
M
M
Akatov
Yu
Y
Arkhangelsky
V
V
Chernykh
I
I
Mitrikas
V
V
Petrov
V
V
Shurshakov
V
V
Tomi
L
L
Kartsev
I
I
Lyagushin
V
V
D001822:Body Burden; D005123:Eye / Q000528:radiation effects*; D006801:Humans; D016273:Occupational Exposure; D019047:Phantoms, Imaging; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods; D012867:Skin / Q000528:radiation effects*; D013026:Space Flight / Q000295:instrumentation* / Q000379:methods