PubMed · 15412772
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
G T REYNOLDS. 1950. Liquid scintillation counters.. https://pubmed.ncbi.nlm.nih.gov/15412772/
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
This paper presents results from dosimetric measurements made aboard the Mir space station and the International Space Station (ISS) using the Pille portable thermoluminescent dosemeter (TLD) system. This paper includes the dosimetry mapping and automatic readout (trapped and untrapped components) results from Mir and ISS. The mean dose rate in 2001-2003 was 7 microGy h(-1). Using the hourly measuring period in automatic mode, doses from both galactic (independent of South Atlantic Anomaly--SAA) and SAA components were determined during Euromir'95 experiment. The mean total dose rate was 12.5 microGy h(-1), while the SAA contribution was 6.2 microGy h(-1). A similar measurement was performed on ISS in 2001 and in 2003. Both the manual and automatic measurements show a significant decrease in dose rate in 2001 in comparison to 1995-1997 due to the change in solar activity. For determination of the high linear energy transfer contribution from the radiation field during the ISS mapping experiment, three CR-39 plastic nuclear track detectors (PNTDs) were co-located with each TL detector. Analysis of the combined TLD and PNTD measurements showed a typical mean TLD efficiency of 84%, a dose contribution <10 keV microm(-1) of 17%, and an average quality factor of 1.95.
Generally, individual monitoring is performed with a small personal dosemeter which responds to radiation by giving a necessary operational quantity such as personal dose equivalent. In space, however, such a personal dosemeter has not yet been available and a dose equivalent is estimated through elaborate work using etched track detectors. It would be advantageous if we could simply measure the personal dose of an astronaut using conventional integrating dosemeters only. This possibility is discussed based on the concept of efficiency combination.
The ICCHIBAN-2 experiment, the first dedicated to the ground-based intercomparison of passive space dosemeters, was carried out between 23 May and 28 May 2002 at the National Institute of Radiological Sciences in Chiba, Japan. The primary objective of the ICCHIBAN-2 experiment was to intercompare the response of passive dosemeters used in space crew dosimetry to monoenergetic heavy ions of charge and energy spanning a significant portion of the galactic cosmic ray (GCR) spectrum. During the ICCHIBAN-2 experiment, dosemeters from 12 different laboratories in 9 countries were irradiated under identical conditions to heavy ion beams of 150 MeV n(-1) (4)He, 400 MeV n(-1) (12)C, 490 MeV n(-1) (28)Si and 500 MeV n(-1) (56)Fe at the NIRS Heavy Ion Medical Accelerator.