Radiation measured for ISS-Expedition 12 with different dosimeters

Zhou, D.; Semones, E.; Gaza, Ramona; Johnson, Stephen B.; Zapp, N.; Weyland, M.

doi:10.1016/j.nima.2007.06.091

Cited by 33 publications

(25 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The CR-39 track etch detectors are chemically etched in a NaOH solution (6.25N, 60°C ± 5°C) for 38 h. The resulting tracks are analyzed manually using a Zeiss Axioskop 40 optical microscope. The bulk etch is calculated using the mass difference before and after etching (Zhou et al 2007a(Zhou et al , 2007b.…”

Section: Passive Detectors: Nuclear Track Etch Detectorsmentioning

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.

View full text Add to dashboard Cite

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.

show abstract

Section: Passive Detectors: Nuclear Track Etch Detectorsmentioning

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.

View full text Add to dashboard Cite

show abstract

“…Environmental oxygen around the CR-39 detectors tends to combine with ions and radicals, thus preventing their recombination and changing the sensitivity of the CR-39 detectors; higher temperature makes the recombination of the ionization easier and faster; the longer the time between the particles' passing through the detector and the etch of the detector, the more fading (Hardcastle and Miles, 1996;Enomoto and Ishigure, 1998;Zhou et al, 2006cZhou et al, , 2007c.…”

Section: Correction For the Fading Of Cr-39 Sensitivitymentioning

confidence: 99%

“…The formula indicates that the average decrease of CR-39 sensitivity is $0.4% per month. The method and procedures in detail to find out the correction formula for the sensitivity fading of CR-39 can be found in Zhou et al (2007c).…”

Section: Correction For the Fading Of Cr-39 Sensitivitymentioning

confidence: 99%

See 1 more Smart Citation

Radiation measured during ISS-Expedition 13 with different dosimeters

Zhou

Semones

Gaza

et al. 2009

Advances in Space Research

Self Cite

View full text Add to dashboard Cite

“…Also, measurements of dose and dose rate are routinely performed on crewed space missions [Zhou et al, 2007]. However, neither of these types of measurements gives a comprehensive picture of LET spectra in unshielded space or at depth in tissue.…”

Section: Introductionmentioning

confidence: 99%

The deep space galactic cosmic ray lineal energy spectrum at solar minimum

et al. 2013

View full text Add to dashboard Cite

[1] The Cosmic Ray Telescope for the Effects of Radiation (CRaTER) instrument is an energetic particle telescope on board the Lunar Reconnaissance Orbiter spacecraft. CRaTER measures energetic charged particles that have sufficient energy to penetrate the outer shielding of the instrument (about 12 MeV/nucleon). Galactic cosmic rays (GCR) with these energies are the primary radiation concern for spacecraft and astronauts outside of the Earth's magnetosphere during times of minimal solar activity. These particles can easily penetrate typical shielding and damage electronics, causing increased electronics failure rates and single event upsets. When this radiation impacts biological cells, it causes an increased risk of cancer. The CRaTER instrument was built to characterize the radiation dose and lineal energy with unprecedented time and energy resolution and was fortuitously flown during a period of time that coincided with the highest GCR fluxes in the modern space age. We report here this worst-case GCR lineal energy spectrum. Observations are made behind a thin aluminum window and different thicknesses of tissue-equivalent plastic. These measurements provide important observational data points to compare with current model predictions of the dose deposited by energetic particles within a tissue-like material.

show abstract

Radiation measured for ISS-Expedition 12 with different dosimeters

Cited by 33 publications

References 14 publications

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

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

Radiation measured during ISS-Expedition 13 with different dosimeters

The deep space galactic cosmic ray lineal energy spectrum at solar minimum

Contact Info

Product

Resources

About