An improved method for estimating the neutron background in measurements of neutron capture reactions

P. Žugec 1 D. Bosnar 1 N. Colonna 2 F. Gunsing 3
1 Department of Physics, Faculty of Science, University of Zagreb, Zagreb 10002, Croatia
2 INFN, sezione di Bari - Istituto Nazionale di Fisica Nucleare, sezione di Bari
3 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
Abstract : The relation between the neutron background in neutron capture measurements and the neutron sensitivity related to the experimental setup is examined. It is pointed out that a proper estimate of the neutron background may only be obtained by means of dedicated simulations taking into account the full framework of the neutron-induced reactions and their complete temporal evolution. No other presently available method seems to provide reliable results, in particular under the capture resonances. An improved neutron background estimation technique is proposed, the main improvement regarding the treatment of the neutron sensitivity, taking into account the temporal evolution of the neutron-induced reactions. The technique is complemented by an advanced data analysis procedure based on relativistic kinematics of neutron scattering. The analysis procedure allows for the calculation of the neutron background in capture measurements, without requiring the time-consuming simulations to be adapted to each particular sample. A suggestion is made on how to improve the neutron background estimates if neutron background simulations are not available.
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Article dans une revue
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2016, 826, pp.80 - 89. 〈10.1016/j.nima.2016.04.086〉
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Contributeur : Valerie Poyeton <>
Soumis le : jeudi 13 avril 2017 - 14:30:00
Dernière modification le : jeudi 15 mars 2018 - 15:06:27

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P. Žugec, D. Bosnar, N. Colonna, F. Gunsing. An improved method for estimating the neutron background in measurements of neutron capture reactions. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2016, 826, pp.80 - 89. 〈10.1016/j.nima.2016.04.086〉. 〈cea-01507623〉

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