This book is intended for scientists engaged in the measurement of weak alpha, beta, and gamma active samples; in health physics, environmental control, nuclear geophysics, tracer work, radiocarbon dating etc. It describes the underlying principles of radiation measurement and the detectors used. It also covers the sources of background, analyzes their effect on the detector and discusses economic ways to reduce the background. The most important types of low-level counting systems and the measurement of some of the more important radioisotopes are described here. In cases where more than one type can be used, the selection of the most suitable system is shown.

A new edition of the most comprehensive text/reference available on the methods and instrumentation used in the detection of ionizing radiation. Updated to reflect advances since the first edition came out in 1979. Retains the general organization of the first edition--all topics of importance are covered in sufficient detail to lead the reader from basic principles to examples of modern applications. Covers modern engineering practice; provides useful design information; and contains an up-to-date and thorough review of the literature.

The need for guidance on the calibration and use of instruments to measure environmental gamma radiation is aided with this major revision of an earlier report by The British Committee on Radiation Units and Measurements. It provides information on the measurement of the air-kerma rate from low-level gamma radiation, such as may occur in the neighbourhood of a nuclear installation. This guide should be of value not only to users of monitoring instruments, but also to those who have to assess the results in relation to compliance with official regulations or recommendations.