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New standards of absorbed dose to water under reference conditions by graphite calorimetry for $^{60}$Co and high-energy x-rays at LNE-LNHB

Franck Delaunay 1, * Jean Gouriou 1 J. Daures 1 Maïwenn Le Roy 1 Aimé Ostrowsky 1 Benjamin Rapp 1 S. Sorel 1
* Corresponding author
1 LNHB - Laboratoire National Henri Becquerel
DM2I - Département Métrologie Instrumentation & Information : DRT/LIST/DM2I
Abstract : The LNE-LNHB has developed two primary standards to determine the absorbed dose to water under reference conditions (for 10 cm × 10 cm) in $^{60}$Co, 6 MV, 12 MV and 20 MV photon beams: a new graphite calorimeter and a water calorimeter. This first paper presents the results obtained with the graphite calorimeter and the new associated methodology. The associated relative standard uncertainty ($k$ = 1) of absorbed dose to water is 0.25% for $^{60}$Co and lies between 0.32% to 0.35% for MV x-ray beams.
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Franck Delaunay, Jean Gouriou, J. Daures, Maïwenn Le Roy, Aimé Ostrowsky, et al.. New standards of absorbed dose to water under reference conditions by graphite calorimetry for $^{60}$Co and high-energy x-rays at LNE-LNHB. Metrologia, IOP Publishing, 2014, 51 (5), pp.552 - 562. ⟨10.1088/0026-1394/51/5/552⟩. ⟨cea-01831912⟩

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