BS EN ISO 4037-2:2021

Radiological protection. X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy - Dosimetry for radiation protection over the energy ranges from 8 keV to…

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标准号

BS EN ISO 4037-2:2021

发布

2021年

发布单位

英国标准学会

当前最新

BS EN ISO 4037-2:2021

 

 

适用范围

1   Scope This document specifies the procedures for the dosimetry of X and gamma reference radiation for the calibration of radiation protection instruments over the energy range from approximately 8 keV to 1,3 MeV and from 4 MeV to 9 MeV and for air kerma rates above 1 µGy/h. The considered measuring quantities are the air kerma free-in-air, K a , and the phantom related operational quantities of the International Commission on Radiation Units and Measurements (ICRU) [ 2 ] , H* (10), H p (10), H' (3), H p (3), H' (0,07) and H p (0,07), together with the respective dose rates. The methods of production are given in ISO 4037‑1. This document can also be used for the radiation qualities specified in ISO 4037‑1:2019, Annexes A, B and C, but this does not mean that a calibration certificate for radiation qualities described in these annexes is in conformity with the requirements of ISO 4037. The requirements and methods given in this document are targeted at an overall uncertainty ( k  = 2) of the dose(rate) of about 6 % to 10 % for the phantom related operational quantities in the reference fields. To achieve this, two production methods of the reference fields are proposed in ISO 4037‑1. The first is to produce “ matched reference fields ”, which follow the requirements so closely that recommended conversion coefficients can be used. The existence of only a small difference in the spectral distribution of the “matched reference field” compared to the nominal reference field is validated by procedures, which are given and described in detail in this document. For matched reference radiation f...

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