[Primary Standard of Absorbed Dose to Water in High-energy Photon Beam Irradiation].
With the aim of improving the accuracy of photon dosimetry, the primary standard of absorbed dose to water for high-energy photon beams had been established using a graphite calorimeter. The relative expanded uncertainty (k = 2) of the calibration coefficient of absorbed dose to water for high-energy photon beams is 0.8%. The National Metrology Institute of Japan has launched a calibration service for high-energy photon beams in terms of absorbed dose to water in November 2013.
Morihito
M
Shimizu
D002138:Calibration; D002151:Calorimetry / Q000295:instrumentation*; D003037:Cobalt Radioisotopes; D005720:Gamma Rays; D006108:Graphite; D007564:Japan; D017785:Photons; D011829:Radiation Dosage; D011874:Radiometry / Q000295:instrumentation* / Q000592:standards*; D014867:Water
D003037:Cobalt Radioisotopes; D014867:Water; D006108:Graphite