Radiation dosimetry onboard the International Space Station ISS

Berger, Thomas

doi:10.1016/j.zemedi.2008.06.014

Cited by 34 publications

(17 citation statements)

References 40 publications

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“…From the mission-integrated doses, the average dose rate was calculated to range from 207 -12 lGy/d to 368 -27 lGy/d. These numbers are very close to the dose rates measured inside the Columbus laboratory and other segments of the ISS, which have an average shielding between 5 and 10 g/ cm 2 (Hajek et al, 2008;Reitz et al, 2005Reitz et al, , 2009Berger, 2008). This similarity in dose rates inside EXPOSE-E and inside the Columbus module reflects the high amount of shielding of the biological samples located within the EXPOSE-E facility.…”

Section: Discussionsupporting

confidence: 75%

“…As a follow-up of the Dosimetric Mapping (DOSMAP) experiment (Reitz et al, 2005), DOSIS is a comprehensive and overarching international dosimetry program dedicated to determining the nature and mapping the distribution of the radiation field inside and outside the European Columbus laboratory with active and passive 1 radiation detectors. Passive thermoluminescence detectors (TLDs) have been applied for radiation measurements on board various space stations and space shuttle missions since the beginning of the space age (Berger, 2008;Reitz et al, 2005Reitz et al, , 2009Hajek et al, 2008). Their small size of a few cubic millimeters and low mass (around 20 mg) allow affixing them close to the samples of interest.…”

Section: Introductionmentioning

confidence: 99%

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Cosmic Radiation Exposure of Biological Test Systems During the EXPOSE-E Mission

et al. 2012

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In the frame of the EXPOSE-E mission on the Columbus external payload facility EuTEF on board the International Space Station, passive thermoluminescence dosimeters were applied to measure the radiation exposure of biological samples. The detectors were located either as stacks next to biological specimens to determine the depth dose distribution or beneath the sample carriers to determine the dose levels for maximum shielding. The maximum mission dose measured in the upper layer of the depth dose part of the experiment amounted to 238 -10 mGy, which relates to an average dose rate of 408 -16 lGy/d. In these stacks of about 8 mm height, the dose decreased by 5-12% with depth. The maximum dose measured beneath the sample carriers was 215 -16 mGy, which amounts to an average dose rate of 368 -27 lGy/d. These values are close to those assessed for the interior of the Columbus module and demonstrate the high shielding of the biological experiments within the EXPOSE-E facility. Besides the shielding by the EXPOSE-E hardware itself, additional shielding was experienced by the external structures adjacent to EXPOSE-E, such as EuTEF and Columbus. This led to a dose gradient over the entire exposure area, from 215 -16 mGy for the lowest to 121 -6 mGy for maximum shielding. Hence, the doses perceived by the biological samples inside EXPOSE-E varied by 70% (from lowest to highest dose). As a consequence of the high shielding, the biological samples were predominantly exposed to galactic cosmic heavy ions, while electrons and a significant fraction of protons of the radiation belts and solar wind did not reach the samples.

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Section: Discussionsupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Cosmic Radiation Exposure of Biological Test Systems During the EXPOSE-E Mission

et al. 2012

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“…In addition; only a reliably measured dataset for radiation exposure and the variation of the radiation load enables us to (a) use this data as input for radiation model and benchmark calculations ) and (b) work toward a reasonably good radiation risk estimation for future long duration space missions (Durante & Cucinotta 2011). The radiation environment onboard the ISS has been monitored since the beginning of the ISS era with various active and passive radiation detector systems (see reviews in : Berger 2008;Caffrey & Hamby 2011;Narici et al 2015) aiming for exact area monitoring within (Kodaira et al 2014) and outside the ISS . Furthermore; various experiments aimed at determining the effective dose equivalent using phantoms for the improvement of radiation risk estimations have been performed (see for example: Reitz et al 2009;Berger et al 2013, Puchalska et al 2014).…”

Section: Introductionmentioning

confidence: 99%

DOSIS & DOSIS 3D: long-term dose monitoring onboard the Columbus Laboratory of the International Space Station (ISS)

Berger

Przybyla

Matthiä

et al. 2016

J. Space Weather Space Clim.

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The radiation environment encountered in space differs in nature from that on Earth, consisting mostly of highly energetic ions from protons up to iron, resulting in radiation levels far exceeding the ones present on Earth for occupational radiation workers. Since the beginning of the space era, the radiation exposure during space missions has been monitored with various active and passive radiation instruments. Also onboard the International Space Station (ISS), a number of area monitoring devices provide data related to the spatial and temporal variation of the radiation field in and outside the ISS. The aim of the DOSIS (2009DOSIS ( -2011 and the DOSIS 3D (2012-ongoing) experiments was and is to measure the radiation environment within the European Columbus Laboratory of the ISS. These measurements are, on the one hand, performed with passive radiation detectors mounted at 11 locations within Columbus for the determination of the spatial distribution of the radiation field parameters and, on the other, with two active radiation detectors mounted at a fixed position inside Columbus for the determination of the temporal variation of the radiation field parameters. Data measured with passive radiation detectors showed that the absorbed dose values inside the Columbus Laboratory follow a pattern, based on the local shielding configuration of the radiation detectors, with minimum dose values observed in the year 2010 of 195-270 lGy/day and maximum values observed in the year 2012 with values ranging from 260 to 360 lGy/day. The absorbed dose is modulated by (a) the variation in solar activity and (b) the changes in ISS altitude.

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“…They also pose risk to space station astronauts when crossing the SAA (e.g., Berger, 2008;Duzellier, 2005;Miroshnichenko, 2003;Samwel et al, 2008). They also pose risk to space station astronauts when crossing the SAA (e.g., Berger, 2008;Duzellier, 2005;Miroshnichenko, 2003;Samwel et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Cross Calibration of >16 MeV Proton Measurements From NOAA POES and EUMETSAT MetOp Satellites

et al. 2019

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A long‐term data set of energetic proton omnidirectional integral fluxes with an 8‐s resolution from National Oceanic and Atmospheric Administration (NOAA) Polar Operational Environmental Satellites (POES) and EUMETSAT MetOp satellites from 1978 to 2014 has been investigated comprehensively to capture the data bifurcations, calibration inconsistency, and some erroneous data. There are two categories of the data bifurcations. The upper and lower branches of both bifurcations can be clearly separated by magnetic local time or by magnetic latitude. The calibration inconsistency of POES and MetOp proton omnidirectional integral fluxes (>16 MeV) is solved by fitting the data from each pair of two satellites using a third‐degree polynomial function. The fitted curve is almost independent of Lm, B/B0, and time in the valid range. By these fitted functions, the >16 MeV proton omnidirectional integral fluxes from other POES and MetOp satellites are recalibrated to the NOAA‐15 measurements that are adopted as the reference standard. Analyses of the recalibrated data at the geomagnetic equator for about 3.5 solar cycles indicate that the maximal and minimal yearly values of >16 MeV proton omnidirectional integral fluxes are in 1987 and in 2002, respectively. By comparisons with the AP8 model predictions, the ratios of the observations in 1987 (in 2002) to the AP8 MIN (AP8 MAX) predictions are mainly within 0.5‐3 (0.1‐2), showing a dependence on Lm and B/B0.

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Radiation dosimetry onboard the International Space Station ISS

Cited by 34 publications

References 40 publications

Cosmic Radiation Exposure of Biological Test Systems During the EXPOSE-E Mission

Cosmic Radiation Exposure of Biological Test Systems During the EXPOSE-E Mission

DOSIS & DOSIS 3D: long-term dose monitoring onboard the Columbus Laboratory of the International Space Station (ISS)

Cross Calibration of >16 MeV Proton Measurements From NOAA POES and EUMETSAT MetOp Satellites

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