A rigorous treatment of self-shielding and covers in neutron spectra determinations

Most neutron spectrum determination methodologies ignore self-shielding effects in dosimetry foils and treat covers with an exponential attenuation model. This work provides a quantitative analysis of the approximations in this approach. It also provides a methodology for improving the fidelity of t...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 1995-12, Vol.42 (6), p.1878-1885
Main Authors: Griffin, P.J., Kelly, J.G.
Format: Article
Language:English
Subjects:
Attenuation
Dosimetry
Gamma ray detectors
Gold
Laboratories
Libraries
Metrology
Neutrons
Sensor phenomena and characterization
Sensor systems
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Summary:Most neutron spectrum determination methodologies ignore self-shielding effects in dosimetry foils and treat covers with an exponential attenuation model. This work provides a quantitative analysis of the approximations in this approach. It also provides a methodology for improving the fidelity of the treatment of the dosimetry sensor response to a level consistent with the user's spectrum characterization approach. A library of correction functions for the energy-dependent sensor response has been compiled that addresses dosimetry foils/configurations in use at the Sandia National Laboratories Radiation Metrology Laboratory.
ISSN:0018-9499
1558-1578
DOI:10.1109/23.489230