Monoenergetic fast neutron reference fields: I. Neutron production

Nolte, R.; Thomas, David J.

doi:10.1088/0026-1394/48/6/s04

Cited by 25 publications

(13 citation statements)

References 36 publications

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“…The irradiations were performed at the PTB Ion Accelerator Facility, where monoenergetic neutron fields are produced via selected reactions of proton and deuteron beams with light or medium-weight target nuclei. The measurements were carried out in open geometry in the low-scattering hall where the contribution of room-return neutrons is minimized by having grid floors [1,2]. The three neutron energies considered in this campaign 1.5, 2.5 and 19 MeV, see Tab.…”

Section: Methodsmentioning

confidence: 99%

Tests of Various Scintillator Detectors in Selected Mono-Energetic Neutron Beams

Jančář¹,

Čulen²,

Mravec³

et al. 2021

EPJ Web Conf.

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In this paper we study quality of three types of organic scintillators stilbene, p-terphenyl and EJ-299-33. We used monoenergetic neutron fields with a wide range of neutron energies in PTB Braunschweig. All the tests were carried out with NGA-01 spectrometer. The results of the measurements are evaluated spectra from the spectrometer. We discuss the quality of each scintillator, such as the FWHM of the peaks.

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Section: Methodsmentioning

confidence: 99%

Tests of Various Scintillator Detectors in Selected Mono-Energetic Neutron Beams

Jančář¹,

Čulen²,

Mravec³

et al. 2021

EPJ Web Conf.

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“…In the energy region between 8 and 14.8 MeV no useful monoenergetic neutron producing reaction is available. In this energy region, the neutron energy distributions produced by bombarding Deuterium targets with deuterons always exhibit a monoenergetic component and a more intense breakup component at lower energies [16].…”

Section: Monoenergetic Beams and Neutron Production In Ptbmentioning

confidence: 99%

0.1–10 MeV Neutron Soft Error Rate in Accelerator and Atmospheric Environments

Cecchetto

Alía

Wrobel

et al. 2021

IEEE Trans. Nucl. Sci.

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Neutrons with energies between 0.1-10 MeV can significantly impact the Soft Error Rate (SER) in SRAMs manufactured in scaled technologies, with respect to high-energy neutrons. Their contribution is evaluated in accelerator, ground level and avionic (12 km of altitude) environments. Experimental cross sections were measured with monoenergetic neutrons from 144 keV to 17 MeV, and results benchmarked with Monte Carlo simulations. It was found that even 144 keV neutrons can induce upsets due to elastic scattering. Moreover, neutrons in the 0.1-10 MeV energy range can induce more than 60% of the overall upset rate in accelerator applications, while their contribution can exceed 18% in avionics. The SER due to neutrons below 3 MeV, whose contribution has always been considered negligible, is found to be up to 44% of the total upsets in accelerator environments. These results have strong Radiation Hardness Assurance (RHA) implications for those environments with high fluxes of neutrons in the 0.1-10 MeV energy range.

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“…A 3 He DePangher long counter (HLC), a BF 3 DePangher long (BLC) counter and a liquid scintillator (LS) [6,36,37] were employed as fluence monitors for all energy neutrons except the LS which was used only for neutron energies above 2.5 MeV. In order to decrease the influence on the uncertainty of experimental RFs of monitor's readings due to scattered neutrons from BSs and shadow cones into monitors, and due to the beam direction instability, all monitors were positioned 2017 JINST 12 T06002 at viewing angles larger than 90 • , near which the angular distribution of neutron sources have a relative flat shape [29,31,38]. The HLC was placed at about 125 • with respect to the beam line and 3.8 m from the target.…”

Section: The Experimental Setupmentioning

confidence: 99%

Experimental determination of the response functions of a Bonner sphere spectrometer to monoenergetic neutrons

Chen

et al. 2017

J. Inst.

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A: A Bonner sphere spectrometer (BSS) plays an important role in characterizing neutron spectra and determining their neutron dose in a neutron-gamma mixed field. A BSS consisting of a set of nine polyethylene spheres with a 3 He proportional counter was developed at Peking University to perform neutron spectrum and dosimetry measurements. Response functions (RFs) of the BSS were calculated with the general Monte Carlo code MCNP5 for the neutron energy range from thermal up to 20 MeV, and were experimentally calibrated with monoenergetic neutron beams from 144 keV to 14 MeV on a 4.5 MV Van de Graaff accelerator. The calculated RFs were corrected with the experimental values, and the whole response matrix was completely established. The spectrum of a 241 Am-Be source was obtained after unfolding the measurement data of the BSS to the source and in fair agreement with the expected one. The integral ambient dose equivalent corresponding to the spectrum was 0.95 of the expected value. Results of the unfolded spectrum and the integral dose equivalent measured by the BSS verified that the RFs of the BSS were well established.

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Monoenergetic fast neutron reference fields: I. Neutron production

Cited by 25 publications

References 36 publications

Tests of Various Scintillator Detectors in Selected Mono-Energetic Neutron Beams

Tests of Various Scintillator Detectors in Selected Mono-Energetic Neutron Beams

0.1–10 MeV Neutron Soft Error Rate in Accelerator and Atmospheric Environments

Experimental determination of the response functions of a Bonner sphere spectrometer to monoenergetic neutrons

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