Variations of radiation environment onboard the ISS in the year 2008

Cosmic radiation exposure of biological test systems during the EXPOSE-R mission

“…Taking into account, that the R3DR instrument was less shielded than the TLDs and therefore saw a higher contribution from trapped particles almost factor of 2 increase in dose from the bottom to the top of the EXPOSE-R facility is well explained. The dose values measured with the TLDs inside EXPOSE-R are very close to dose values measured inside the ISS (Lishnevskii et al 2010; Welton et al 2012; Berger et al 2013; Pálfalvi et al . 2014) and reflect therefore the high amount of shielding of the biological samples located within the EXPOSE-R facility.…”

“…Nevertheless one can compare the daily dose values measured during the EXPOSE-R mission with a similar experiment performed during the EXPOSE-E mission (Berger et al 2012;Rabbow et al 2012). The dose values measured with the TLDs inside EXPOSE-R are very close to dose values measured inside the ISS (Lishnevskii et al 2010;Welton et al 2012;Berger et al 2013;Pálfalvi et al 2014) and reflect therefore the high amount of shielding of the biological samples located within the EXPOSE-R facility. The average absorbed dose rates measured with TLDs for EXPOSE-E varied between 207 ± 12 μGy d −1 (min) and 368 ± 27 μGy d −1 (max) at similar detector locations as for EXPOSE-R.…”

“…1 in Lishnevskii et al (2010) for the end of the year 2008 when the EXPOSE-R facility was stored in the Russian Segment of the ISS). One has to take into account, if looking at the dose rate data, that the facility was only exposed for 682 days outside the station with additional 151 days either inside the ISS (in the Russian Part of the ISS) or on the way to or from the ISS.…”

DOSIS & DOSIS 3D: radiation measurements with the DOSTEL instruments onboard the Columbus Laboratory of the ISS in the years 2009–2016

“…We only want to show some baseline comparison in order to bring the measurements performed with the DOSTEL instruments in an overall ISS perspective. For example, four silicon detectors (DB-8) are used for operational dosimetry in the Russian Zvezda module (Lishnevskii et al 2010(Lishnevskii et al , 2012a(Lishnevskii et al , 2012b. These units are at distinct positions with various average shielding thicknesses and provide absorbed dose values in silicon for GCR and SAA contributions separately.…”

Matroshka DOSTEL measurements onboard the International Space Station (ISS)

“…The contribution from GCR particles was 115 lGy day À1 and 45 lGy day À1 result from particles of the inner radiation belt in the SAA region (SAA). The four DB-8 units located in the Zvezda module have measured an absorbed dose rate induced by GCR particles of 100 lGy day À1 (Lishnevskii et al 2010). The absorbed dose rate from trapped particles differs between the four DB-8 units because of the strong dependence on the local shielding of the detectors.…”