This document specifies the neutron reference radiation fields, in the energy range from thermal up to 20 MeV, for calibrating neutron-measuring devices used for radiation protection purposes and for determining their response as a function of neutron energy. This document is concerned only with the methods of producing and characterizing the neutron reference radiation fields. The neutron reference radiation fields specified are the following: \u2014 neutron fields from radionuclide sources, including neutron fields from sources in a moderator; \u2014 neutron fields produced by nuclear reactions with charged particles from accelerators; \u2014 neutron fields from reactors.<\/p>\n
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| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4.1 Overview 4.2 Types of calibration sources <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 4.3 Source shape and encapsulation 4.4 Photon component of the neutron field <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 4.5 Energy distribution of neutron source emission rate 4.6 Neutron fluence rate produced by a source <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 4.7 Determination of the neutron source emission rate 4.8 Irradiation facility <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 5.1 Overview 5.2 General properties <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 5.3 Neutron reference radiation fields produced with particle accelerators 5.3.1 General requirements 5.3.2 Energy of charged particles <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 5.3.3 Neutron spectrum 5.3.4 Parasitic and scattered neutron background <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 5.3.5 Neutron fluence measurement and monitoring 5.4 Neutron reference radiation fields produced with reactors 5.4.1 General requirements 5.4.2 Production and monitoring <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Neutron reference radiations fields – Characteristics and methods of production<\/b><\/p>\n |