The epithermal neutron flux distribution in a nuclear reactor and its effect on epithermal neutron activation analysis

Bereznai, T.; Mahon, T.D. Mac

doi:10.1007/bf02519610

Cited by 19 publications

(3 citation statements)

References 15 publications

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“…It has been pointed out that in reactor spectra the epithermal component may deviate from 1/E [3]. Versions of each of the three conventions discussed below have been used in which equation ( 1) is modified as follows [7][8][9]:…”

Section: Epithermal Neutronsmentioning

confidence: 99%

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Thermal neutron standards

Williams

Gilliam

2011

Metrologia

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Over the 50-year history of Section III (Neutron Measurements) of the Consultative Committee for Ionizing Radiation of the International Committee for Weights and Measures, only a single interlaboratory comparison of thermal neutron measurements has been completed, although a new comparison of this kind is in progress at the time of this writing. The initial comparison was perhaps considered to have demonstrated a sufficient degree of agreement that its repetition was not of particularly urgent priority. Thermal neutron measurements are indeed an old and well-developed field, as is seen in the many references cited in this paper. This paper describes briefly the production of thermal neutron fields from fast neutron sources, the moderation of neutron spectra towards thermal equilibrium, various conventions for describing thermal neutron fields, corrections for self-absorption and scattering in detector materials and the selection of detectors based on established thermal neutron cross-section standards.

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Section: Epithermal Neutronsmentioning

confidence: 99%

“…The two integrals can then be solved in terms of the incomplete gamma functions. Expanding these as power series results in coefficients for the terms up to order ( 0 v 0 t) 2 that come from the complete gamma functions, as in equation (8). Higher order terms can be shown by this method to converge.…”

Section: Plane Detector Maxwellian Beammentioning

confidence: 99%

Thermal neutron standards

Williams

Gilliam

2011

Metrologia

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“…The X2/f is 1. 6 when data from all 38 available reactions are included. If discrepant data for the 59Co(n,y), 55Mn(n,y) and 238U(n,f) reactions are eliminated, the x2/f is 1.02.…”

Section: 5mentioning

confidence: 99%