Journal ArticleDOI
Modification and generalization of some methods to improve the accuracy of α-determination in the 1/E1+α epithermal neutron spectrum
TLDR
In this paper, the two-detector method of RYVES is modified by using Cd-ratio measurements, thus eliminating the introduction of systematic errors due to the inaccuracy of absolute nuclear data.Abstract:
Some methods described in the literature for the determination of α in the 1/E1+α epithermal neutron spectrum are critically reviewed with respect to their accuracy. The multi resonance—detector method with Cd-covered irradiations, as used by SCHUMANN and ALBERT, is generalized by subtracting the epithermal 1/v-tail and by introducing the effective resonance energy, as defined by RYVES. The two-detector method of RYVES is modified by using Cd-ratio measurements, thus eliminating the introduction of systematic errors due to the inaccuracy of absolute nuclear data. The adapted methods are applied in channel 15 of the Thetis reactor (Gent).read more
Citations
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Journal ArticleDOI
k0-measurements and related nuclear data compilation for (n, γ) reactor neutron activation analysis
TL;DR: In this paper, the accuracy of literature data for 112 radionuclides of interest in (n, γ) reactor neutron activation analysis is compared with the values calculated from the experimentally determined k0-factors.
Journal ArticleDOI
The accuracy and precision of the experimental α-determination in the 1/E1+α epithermal reactor-neutron spectrum
TL;DR: In this article, the experimental α-determination in the 1/E1+α epithermal reactorneutron spetrum was compared with respect to their accuracy and precision.
ko-MEASUREMENTS AND RELATED NUCLEAR DATA COMPILATION FOR (n, "/) REACTOR NEUTRON ACTIVATION ANALYSIS
F. De Corte,A. Simonits +1 more
Journal ArticleDOI
The standardization of standardless NAA
TL;DR: This review describes how the original `standardless' (absolute and single-comparator) NAA-calibration methods were stepwise upgraded with respect to their accuracy and manageability, leading to the launching of the k0-method in the mid 1970s.
Journal ArticleDOI
Instantaneous α-determination without Cd-cover in the 1/E1+α epithermal neutron spectrum
TL;DR: In this paper, a new method is developed for instantaneous α-determination in the 1/E1+α epithermal neutron spectrum using coirradiation of three bare resonance detectors, followed by gamma-counting on a calibrated Ge(Li)-detector.
References
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Journal ArticleDOI
A New Thermal Neutron Flux Convention
TL;DR: In this paper, a new thermal neutron flux convention is proposed where the neutron slowing down spectrum per unit energy varies as 1/E1+β (| β ln E | << 1).
Journal ArticleDOI
Instantaneous α-determination without Cd-cover in the 1/E1+α epithermal neutron spectrum
TL;DR: In this paper, a new method is developed for instantaneous α-determination in the 1/E1+α epithermal neutron spectrum using coirradiation of three bare resonance detectors, followed by gamma-counting on a calibrated Ge(Li)-detector.
Journal ArticleDOI
The effective resonance energy\(\overline {E_r } \) as a parameter for the correction of resonance integrals in 1/E1+α epithermal neutron spectra; tabulation of\(\overline {E_r } \)-values for 96 isotopesfor 96 isotopes
TL;DR: In this paper, the effective resonance energy (EEE), introduced by RYVES, is a useful parameter for the correction of resonance integrals in non-ideal epithermal neutron spectra, which can be approximated by a 1/E1+α-flux distribution.
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k0-Measurements and related nuclear data compilation for (n, γ) reactor neutron activation analysis - IIIb: Tabulation
F. De Corte,A. Simonits +1 more