Compendium of neutron spectra in criticality accident dosimetry [antikvár]

FOREWORD In a criticality accident,dose estimates can only be obtained to the required accuracy with existing dosimetric systems if a reasonable approximation to the actual neutron spectrum is readily available. Following the recommendation of the participants in the Agency's International Co-ordinated Research Programme on Nuclear Accident Dosimetry, H. Ing of Chalk River Nuclear Laboratories, Canada, and S. Makra of the Hungárián Academy of Sciences, were engaged as consultants to compile this compendium of neutron spectra. Although the spectra listed here are primarily for application in criticality accident dosimetry and encompass the most likely neutron spectra encountered in such accidents, several 14-MeV neutron leakage spectra have been included in addition. 14-MeV neutrons are commonly used and are of particular interest not only in neutron dosimetry but alsó in radiobiology and in fusion research. It is hoped that this compendium will facilitate the determination of dose from readings of detectors exposed to various neutron fields. Many participants in the Co-ordinated Research Programme have contri-buted to this work by suggesting the type and extent of information to be included and discussing this compilation at research co-ordination meetings in Valduc (Francé) in 1970, in Oak Ridge (USA) in 1971, in Vinfca (Yugoslavia) in 1973, and in Harwell (UK) in 1975. Special thanks for helpful comments are due to M. Bricka (Francé), H.J. Delafield (UK), J.A.B. Gibson (UK), F.F. Haywood (USA), G.I. Pavlov (USSR), U. Madvanath (India), R. Medioni (Francé) and E.K.A. Piesch (Fed. Rep. of Germany). The author from Chalk River Nuclear Laboratories is especially grateful to a close colleague, W.G. Cross, who contributed directly to the compendium in many ways and provided valuable advice while the manuscript was in preparation. He alsó thanks G. Cowper and R. V. Osborne for helpful suggestions and P.J. Bunge and B.C. Greiner for capable technical assistance. Much of the credit for the contributions to the compendium by the Hungárián Academy of Sciences is due to J. Pálfalvi who performed most of the spectral calculations and prepared the data in final form. Thanks are alsó due to L. Kolbinger of the Central Research Institute for Physics, Budapest, who helped in the spectral calculations and to M. Berces for technical assistance. Theauthors wish to express their appreciation to F.N. Flakus of the IAEA's Division of Nuclear Safety and Environmental Protection for the co-ordination of this work.