BS ISO 6980-2-2004 核能.参考β粒子辐射.辐射场的基本数量特性的相关校正基础

标准号：BS ISO 6980-2-2004
中文标准名称：核能.参考β粒子辐射.辐射场的基本数量特性的相关校正基础
英文标准名称：Nuclear energy - Reference beta-particle radiation - Calibration fundamentals related to basic quantities characterizing the radiation field
标准类型：F80
发布日期：2004/10/18 12:00:00
实施日期：2004/10/18 12:00:00
中国标准分类号：F80
国际标准分类号：17.240
适用范围：This part of ISO 6980 specifies methods for the measurement of the directional absorbed-dose rate in a tissue-equivalent slab phantom in the ISO 6980 reference beta-particle radiation fields. The energy range of the beta-particle-emitting isotopes covered by these reference radiations is 0,066 to 3,54 MeV (maximum energy). Radiation energies outside this range are beyond the scope of this standard. While measurements in a reference geometry (depth of 0,07 mm at perpendicular incidence in a tissue-equivalent slab phantom) with a reference class extrapolation chamber are dealt with in detail, the use of other measurement systems and measurements in other geometries are also described, although in less detail. The ambient dose equivalent, H(10) as used for area monitoring of strongly penetrating radiation, is not an appropriate quantity for any beta radiation, even for that penetrating a 10 mm thick layer of ICRU tissue (i.e. Emax > 2 MeV). If adequate protection is provided at 0,07 mm, only rarely will one be concerned with other depths, for example 3 mm. This document is geared towards organizations wishing to establish reference-class dosimetry capabilities for beta particles, and serves as a guide to the performance of dosimetry with the reference class extrapolation chamber for beta-particle dosimetry in other fields. Guidance is also provided on the statement of measurement uncertainties.