The replacement of cadmium as a thermal neutron filter

Autor:	David J. Thomas, P. Kolkowski, N. J. Roberts, B. D’Mellow, Malcolm J. Joyce, Stephen David Monk
Rok vydání:	2007
Předmět:	Physics Nuclear and High Energy Physics Cadmium chemistry Filter (video) Nuclear engineering media_common.cataloged_instance chemistry.chemical_element Neutron European union Instrumentation Neutron temperature media_common
Zdroj:	Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 577:690-695
ISSN:	0168-9002
DOI:	10.1016/j.nima.2007.05.001
Popis:	Cadmium is widely used where it is desirable to eliminate the thermal component of a neutron spectrum. However, with the restrictions on the use of cadmium in the European Union due to the recent European Union Directive 2002/95/EC (RoHS), the inclusion of cadmium in instrumentation is becoming untenable. The work presented here examines a number of candidate materials in order to find a suitable replacement for cadmium. It is shown through the examination of cross-section data, MCNP modelling and experimental evaluation that flex-boron is suitable in some applications while gadolinium has absorption properties which are broadly similar to cadmium. However, it is clear that none of the candidates can quite equal to the performance of cadmium.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7d3adb1c12d4bc26dd8ec1918faa2864 https://doi.org/10.1016/j.nima.2007.05.001 Zobrazit plný text záznamu Full Text from ScienceDirect