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W. Will, Measurement of Conversion Coefficients for Estimating Photon Individual Dose Equivalents for a Cuboid Water Phantom, Radiation Protection Dosimetry, Volume 27, Issue 1, 1 March 1989, Pages 9–14, https://doi.org/10.1093/oxfordjournals.rpd.a080439
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Abstract
The cuboid water phantom of IAEA design seems to be better suited for practical purposes than the tissue-equivalent ICRU sphere for the calibration of individual dosemeters with respect to the operational dose equivalent quantities of ICRU Report 39. The required conversion coefficients between these new quantities and the commonly used receptor-free dose quantities, and also the backscatter factors, were measured for three sets of differently filtered X rays with tube voltages between 10 and 250 kV in accordance with ISO standard 4037 and for 137Cs and 60Co gamma radiation. The measurements were made in parallel with ionisation chambers and TLD and agreed well with the results of comparable Monte Carlo calculations. The cuboid water phantom can be considered as a convenient practical alternative to the ICRU sphere in the calibration of individual dosemeters with respect to individual dose equivalents, since backscatter factors and conversion coefficients for both phantom types agree within ± 8% over the entire photon energy range below 3 MeV (except for penetrating dose equivalents at low energies).