Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - The replacement of cadmium as a thermal neutron filter.
AU - D'Mellow, Bob
AU - Thomas, David J.
AU - Joyce, Malcolm J.
AU - Kolkowski, Peter
AU - Roberts, Neil J.
AU - Monk, Stephen D.
PY - 2007/7
Y1 - 2007/7
N2 - 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. (c) 2007 Elsevier B.V. All rights reserved.
AB - 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. (c) 2007 Elsevier B.V. All rights reserved.
KW - thermal neutrons
KW - shielding material
KW - cadmium
KW - gadolinium
KW - RoHS directive
U2 - 10.1016/j.nima.2007.05.001
DO - 10.1016/j.nima.2007.05.001
M3 - Journal article
VL - 577
SP - 690
EP - 695
JO - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 3
ER -