NRPB- R333 (revised)-Response Characteristics of Neutron Survey Instruments

Author(s): D T Bartlett, R J Tanner, H Tagziria [1] and D J Thomas [1]

1. CIRM, National Physical Laboratory, Teddington, Middlesex, TW11 0LW

Approval date: August 2001

Publication date: November 2001 (revised February 2002)

Funded by the National Measurement System Policy Unit, Department of Trade and Industry. Final Report of DTI National Measurement System Policy Unit Project 3.6.1, 'Provision of Reliable Energy Response Function Data for Routinely Used Survey Meters in Neutron Metrology', NMSPU Reference MPU 8/56.4.

Price: £15.00

ISBN 0-85951-472-2

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© Health Protection Agency 2012

Abstract

The response characteristics presently used for neutron survey instruments are often based on a very limited set of early data. With the increasing availability of workplace spectral information, and greater concern over correcting instrument readings, better response characteristic data are needed. This report gives the results of a survey to establish which are the most commonly used designs, lists available survey instrument response data, and gives the results of computer modelling and response calculations for these designs.

The report has been revised to correct errors in the calculations to normalise the response characteristic data for the NM1/2 and Studsvik 2202D instruments. The numerical values given in Tables 4, 5 and 6 of the main text, Table 2 of Appendix F, and Tables 2 and 3 of Appendix G have been revised.

Last reviewed: 8 June 2010