RESULTS
For MTR-2A, the phantom from MTR-1 was
used again, but fitted with a fresh set of
passive detectors. The data generated with
passive thermoluminescence detectors at over
1 600 measurement points in the phantom
gave an impressive view of the dose
distribution through a human body (see
figure). During a spacewalk the skin dose may
reach values as high as 2.5 mGy/day (MTR-1),
while inside the ISS the skin dose drops down
to 160 - 260 μGy/day (MTR-2A), depending on
the local shielding conditions. In combination
with results from plastic nuclear track
detectors, the evaluated dose distributions
served as data input to calculate organ dose
equivalents and effective doses needed for
radiation risk assessment.PUBLICATION(S)
Berger T, Bilski P, Hajek M, Puchalska M, Reitz G. The MATROSHKA experiment: Results and
comparison from extravehicular activity (MTR-1) and intravehicular activity (MTR-2A/2B)
exposure. Radiation Research. November 19, 2013;180(6):622-637. doi: 10.1667/RR13148.1.
Beck P, Zechner A, Rollet S, et al. MATSIM: Development of a voxel model of the MATROSHKA
astronaut dosimetric phantom. IEEE Transactions on Nuclear Science. 2011;58(4):1921-1926.
doi: 10.1109/TNS.2011.2157704.
Reitz G, Berger T, Sundblad P, Dettmann J. Reducing radiation risk in space: The MATROSHKA
project. ESA Bull. 2010;141:28-36.
This investigation is complete and all results are published.
ISS012E22711 – Cosmonaut Valery I. Tokarev,
Expedition 12 flight engineer works with the European
Matroshka-R Phantom experiment in the Zvezda
Service Module of the International Space Station.