BIORADIATION DOSIMETRY IN SPACEFLIGHT (BRADOZ)
Research Area: Radiation Measurements and Shielding
Expedition(s): 1-11
Investigator(s): ● Yury A. Akatov, Institute of Medical and Biological
Problems of the Russian Academy of Sciences,
Moscow, Russia
RESEARCH OBJECTIVES
Bioradiation Dosimetry in Spaceflight (Bradoz) creates methods of bioradiation dosimetry for
more precise assessments of biologically significant dose loads on the human body during long-
term spaceflights. During Bradoz, complex studies are performed that make possible the
establishment of a stable, reliable correlation between the
physical characteristics of ionizing cosmic radiation being
measured and the vitally important biological effects of
radiation exposure.
SPACE BENEFITS
Bradoz results can be used during the creation and
operation of a system for accounting of and monitoring
individual radiation doses in space explorers during the
period of their professional activity.RESULTS
During the course of research for the Bradoz project,
experimental materials were obtained for assessing the
biologically significant dose loads on the human body during
spaceflight. The results of the Bradoz experiment
convincingly showed that dose measurements in
International Space Station compartments using only thermo-
luminescent detectors gave an absorbed dose error of up to
10% (reduced) and an equivalent dose error of up to ± 30%
due to possible variations in the radiation quality factor. This error can be reduced through the
use of a combined method, consisting of the joint use of thermo-luminescent and solid-state
track detectors.
PUBLICATION(S)
Hajek M, Berger T, Vana N, et al. Convolution of TLD and SSNTD measurements during the
BRADOS-1 experiment onboard ISS (2001). Radiation Measurements. 2008;43(7):1231-1236.
doi: 10.1016/j.radmeas.2008.04.094.
Szabó J, Palfalvi JK, Dudas B, Akatov YA, Eordogh I. Cosmic ray detection on the ISS by a 3 axes
track etch detector stack and the complementary calibration studies. Radiation Measurements.
February 2008;43(2-6):688-693. doi: 10.1016/j.radmeas.2008.02.016.
Placement of several Bradoz sets
within the ISS RS compartments.
Roscosmos image.