Cross talk and diaphony in neutron detectors

Désesquelles, P.; Cole, A.J.; Dauchy, A.; Giorni, A.; Heuer, D.; Lléres, A.; Morand, C.; Saint-Martin, Jérôme; Stassi, P.; Viano, J.B.; Chambon, B.; Cheynis, B.; Drain, D.; Pastor, C.

doi:10.1016/0168-9002(91)90206-6

Cited by 42 publications

(13 citation statements)

References 5 publications

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“…Crosstalk events are more probable for detectors that are close together because of the large solid angle available to the scattered neutron from the neighboring detectors. Since the cross-talk contribution is not necessarily negligible [27,28], some care must be taken to identify it and subtract it from the data.…”

Section: The Neutron Detectorsmentioning

confidence: 99%

Electromagnetic excitation ofLi11

et al. 1993

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We have performed a kinematically complete measurement of the Coulomb dissociation of 28 MeV/nucleon Li into Li and two neutrons by a Pb target. From the energies and angles of the emitted neutrons and of Li, the excitation energy E of Li was determined on an event-by-event basis, and the Coulomb dissociation cross section as a function of excitation energy was constructed.The photonuclear cross section o~q (E) and the dipole strength function dB(El)/dE were determined from the Coulomb dissociation cross section. o~q(E) has a peak at E = 1.0 MeV and a width I = 0.8 MeV. These parameters are consistent with the picture of a soft dipole mode. However, a significant post-breakup Coulomb acceleration of Li suggests instead a direct breakup. The complete kinematical measurement also allowed neutron and Li momentum distributions to be constructed in the rest frame of the Li. The momentum distributions were fitted with Gaussian functions, yielding width parameters o& = 18 + 4 MeV/c and o"=13 + 3 MeV/c. A more general feature of the breakup mechanism of Li could be deduced from these measurements. It was found that the Li and neutron momentum distributions and the neutron-neutron relative momentum distribution could be reproduced if the Li excitation energy was partitioned between the Li and the neutrons by a three-body phase space distribution. This indicates there is no directional correlation between the halo neutrons, and shows that the halo neutrons do not exist as a dineutron bound to a Li core. PACS number(s): 25.70. De, 21.10.Gv, 25.20.Dc, 25.60.+v

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Section: The Neutron Detectorsmentioning

confidence: 99%

Electromagnetic excitation ofLi11

et al. 1993

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“…The strategy pursued in this work has been to reproduce the detection system adopted in the experiment through the development of a simulation code that allows to assess the effect of all the experimental biases on the angular correlations between the neutrons. The simulation performed is based on GEANT4 [7], MENATE_R [8,9] to describe the neutron interaction in the DEMON detectors and ROOT [10].…”

Section: Introductionmentioning

confidence: 99%

Neutron Emission Anisotropy in Fission

Chietera¹,

Stuttgé²,

Gönnenwein³

et al. 2015

Acta Phys. Pol. B

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Experimental neutron angular distributions are investigated in the spontaneous fission process of 252 Cf. The CORA experiment, presented in this paper, has the aim to study neutron angular correlations in order to elucidate the neutron emission mechanisms in the fission process. The experimental setup is composed by the CODIS fission chamber and the DEMON neutron multidetector. The development of a simulation toolkit based on GEANT4 and ROOT adopted as strategy to investigate the emission of the neutrons is described. Preliminary results on the sources of the anisotropy, scission neutron emission and/or dynamical anisotropy, are shown.

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“…These cross-talk measurements are the first ever made below 14 MeV [10]. The results were compared to simulations using the codes MENATE [11] and MENATE R [12], a revised version of MENATE for the GEANT4 framework, including only the active scintillator volumes. Simulations give efficiencies in good agreement with the experimental data, as shown in Fig.…”

Section: Efficiency and Cross-talk Measurementsmentioning

confidence: 99%

A New Neutron Time-of-Flight Array for β-Decay Studies

Sénoville¹,

Delaunay²,

Achouri³

et al. 2015

Proceedings of the Conference on Advances in Radioactive Isotope Science (ARIS2014)

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A new time-of-flight array for β-delayed neutron spectroscopy (E n < 5 MeV) is being developed with the aim of improved performance compared to existing arrays. We report on the status of this development, in particular the study of the n-γ discrimination quality with digital electronics, a comparison of several organic scintillators, including new discriminating plastics, as well as the characterisation of detectors with monoenergetic neutrons to measure intrinsic efficiencies and cross-talk probabilities.

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Cross talk and diaphony in neutron detectors

Cited by 42 publications

References 5 publications

Electromagnetic excitation ofLi11

Electromagnetic excitation ofLi11

Neutron Emission Anisotropy in Fission

A New Neutron Time-of-Flight Array for β-Decay Studies

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