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Journal articles
The LNE-LNHB water calorimeter for primary measurement of absorbed dose at low depth in water: application to medium-energy x-rays
Abstract : Water calorimeters are used to establish absorbed dose standards in several national metrology laboratories involved in ionizing radiation dosimetry. These calorimeters have been first used in high-energy photons of (60)Co or accelerator beams, where the depth of measurement in water is large (5 or 10 cm). The LNE-LNHB laboratory has developed a specific calorimeter which makes measurements at low depth in water (down to 0.5 cm) easier, in order to fulfil the reference conditions required by the international dosimetry protocols for medium-energy x-rays. This new calorimeter was first used to measure the absorbed dose rate in water at a depth of 2 cm for six medium-energy x-ray reference beams with a tube potential from 80 to 300 kV. The relative combined standard uncertainty obtained on the absorbed dose rate to water is lower than 0.8%. An overview of the design of the calorimeter is given, followed by a detailed description of the calculation of the correction factors and the calorimetric measurements.
https://hal-cea.archives-ouvertes.fr/cea-01816383
Contributor : Bruno Savelli <>
Submitted on : Friday, June 15, 2018 - 11:09:01 AM
Last modification on : Monday, February 10, 2020 - 6:12:32 PM
Contributor : Bruno Savelli <>
Submitted on : Friday, June 15, 2018 - 11:09:01 AM
Last modification on : Monday, February 10, 2020 - 6:12:32 PM