Determination of Resonance Parameters and their Covariances from Neutron Induced Reaction Cross Section Data

Schillebeeckx, P.; Becker, Boris W.; Danon, Y.; Guber, K. H.; Harada, Hideo; Heyse, J.; Junghans, A. R.; Kopecky, S.; Massimi, C.; Moxon, M.C.; Otuka, Naohiko; Sirakov, I.; Volev, K.

doi:10.1016/j.nds.2012.11.005

Cited by 119 publications

(153 citation statements)

References 212 publications

(411 reference statements)

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“…3 shows a comparison of the first resonance (at 13.5 keV) between the present work and Ref. [18] convoluted with the n TOF energy response function [24].…”

Section: Cross Section Determinationmentioning

confidence: 80%

The³³S(n,α)³⁰Si cross section measurement at n_TOF-EAR2 (CERN): From 0.01 eV to the resonance region

Sabaté-Gilarte¹,

Praena²,

Porras³

et al. 2017

EPJ Web Conf.

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Abstract. The 33 S(n,α) 30 Si cross section measurement, using 10 B(n,α) as reference, at the n TOF Experimental Area 2 (EAR2) facility at CERN is presented. Data from 0.01 eV to 100 keV are provided and, for the first time, the cross section is measured in the range from 0.01 eV to 10 keV. These data may be used for a future evaluation of the cross section because present evaluations exhibit large discrepancies. The 33 S(n,α) 30 Si reaction is of interest in medical physics because of its possible use as a cooperative target to boron in Neutron Capture Therapy (NCT).

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“…3 shows a comparison of the first resonance (at 13.5 keV) between the present work and Ref. [18] convoluted with the n TOF energy response function [24].…”

Section: Cross Section Determinationmentioning

confidence: 80%

The³³S(n,α)³⁰Si cross section measurement at n_TOF-EAR2 (CERN): From 0.01 eV to the resonance region

Sabaté-Gilarte¹,

Praena²,

Porras³

et al. 2017

EPJ Web Conf.

Self Cite

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“…With such a neutron producing target the energy resolution in the fast neutron range is dominated by the achievable ToF resolution of the detectors used. The response functions of different neutron ToF facilities are discussed in detail in the review article by Schillebeeckx et al [15]. The nELBE neutron spectrum ranges from about 10 keV up to 10 MeV.…”

Section: The Nelbe Neutron Time-of-flight Facilitymentioning

confidence: 99%

Inelastic scattering of fast neutrons from⁵⁶Fe

et al. 2017

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Abstract. The inelastic scattering of fast neutrons on 56 Fe was investigated in different manners at the neutron time-of-flight facility nELBE. The scattering cross section was determined via the measurement of the γ -ray production and by means of a kinematically complete double time-of-flight method. In a further measurement the γ -ray angular distribution was determined to correct the measured cross sections for anisotropy. The resulting inelastic scattering cross section determined from the photo production cross sections is in very good agreement with evaluations and previous measurements. In contrast, the result of the double time-offlight measurement is about 10% lower than these data, giving a hint to neutron-γ -ray angular correlations in the process of inelastic neutron scattering.

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“…1, was used for background filters. Background filters [12]. Neutrons traversing the sample and the filters are finally detected by a 6.35 mm × 76 mm × 76 mm Li glass scintillator, placed at 11 m from the neutron producing target.…”

Section: Transmission Measurementsmentioning

confidence: 99%

“…A set of Li, B, Cu, Ni and Pb collimators with decreasing diameter are placed between the neutron producing target and the sample; a similar sequence of collimators with increasing diameter are placed between the sample and the detector. Experiments in good transmission geometry are required to ensure that all detected neutrons traverse the sample and scattered neutrons do not reach the detector [12].…”

Section: Transmission Measurementsmentioning

confidence: 99%

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Experiments at the GELINA facility for the validation of the self-indication neutron resonance densitometry technique

et al. 2017

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Abstract. Self-Indication Neutron Resonance Densitometry (SINRD) is a passive non-destructive method that is being investigated to quantify the 239 Pu content in a spent fuel assembly. The technique relies on the energy dependence of total cross sections for neutron induced reaction. The cross sections show resonance structures that can be used to quantify the presence of materials in objects, e.g. the total cross-section of 239 Pu shows a strong resonance close to 0.3 eV. This resonance will cause a reduction of the number of neutrons emitted from spent fuel when 239 Pu is present. Hence such a reduction can be used to quantify the amount of 239 Pu present in the fuel. A neutron detector with a high sensitivity to neutrons in this energy region is used to enhance the sensitivity to 239 Pu. This principle is similar to self-indication cross section measurements. An appropriate detector can be realized by surrounding a 239 Pu-loaded fission chamber with appropriate neutron absorbing material. In this contribution experiments performed at the GELINA time-of-flight facility of the JRC at Geel (Belgium) to validate the simulations are discussed. The results confirm that the strongest sensitivity to the target material was achieved with the self-indication technique, highlighting the importance of using a 239 Pu fission chamber for the SINRD measurements.

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Determination of Resonance Parameters and their Covariances from Neutron Induced Reaction Cross Section Data

Cited by 119 publications

References 212 publications

The³³S(n,α)³⁰Si cross section measurement at n_TOF-EAR2 (CERN): From 0.01 eV to the resonance region

The³³S(n,α)³⁰Si cross section measurement at n_TOF-EAR2 (CERN): From 0.01 eV to the resonance region

Inelastic scattering of fast neutrons from⁵⁶Fe

Experiments at the GELINA facility for the validation of the self-indication neutron resonance densitometry technique

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Determination of Resonance Parameters and their Covariances from Neutron Induced Reaction Cross Section Data

Cited by 119 publications

References 212 publications

The33S(n,α)30Si cross section measurement at n_TOF-EAR2 (CERN): From 0.01 eV to the resonance region

The33S(n,α)30Si cross section measurement at n_TOF-EAR2 (CERN): From 0.01 eV to the resonance region

Inelastic scattering of fast neutrons from56Fe

Experiments at the GELINA facility for the validation of the self-indication neutron resonance densitometry technique

Contact Info

Product

Resources

About

The³³S(n,α)³⁰Si cross section measurement at n_TOF-EAR2 (CERN): From 0.01 eV to the resonance region

The³³S(n,α)³⁰Si cross section measurement at n_TOF-EAR2 (CERN): From 0.01 eV to the resonance region

Inelastic scattering of fast neutrons from⁵⁶Fe