Improvements in and relating to monitoring

摘要

A method and apparatus are provided for determining dose rate for one or more selected locations within an environment, the method comprising the steps of: a) measuring incident gamma ray energy and count rate for one or more locations within the environment to obtain a measured spectrum for those measured locations; b) measuring the spatial position of the measured locations; c) determining an emitted spectrum for the measured locations from the measured spectrum; d) inputting the emitted spectrum and measured location information to data processing means; and e) determining the dose rate at one or more selected locations from the calculated total gamma ray energy incident on those one or more selected locations arising from the emitted spectrum of the measured locations. In this way the invention provides an accurate solution for the dose rate at any point of interest within the environment based on the measured count and incident energies.