Modeling NE213 scintillator response to neutrons using an MCNPX-PHOTRACK hybrid code

Tajik, M.; Ghal-Eh, Nima; Etaati, G. R.; Afarideh, H.

doi:10.1016/j.nima.2012.12.001

Cited by 25 publications

(7 citation statements)

References 18 publications

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“…[28]. For recoil particles other than protons, literature data [29,30] scaled with the relative proton light-output, are used in the code. In addition to serving as the basis for the PFNS ratio determination, the measurement performed with the 252 Cf source serves as a validation of the Monte Carlo model.…”

Section: Determination Of the Pfnsmentioning

confidence: 99%

Prompt neutrons in correlation with fission fragments from U235(n,f)

et al. 2018

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Improved knowledge of prompt emission in fission has significant implications for our understanding of the fission process. It is also important for improving nuclear data evaluation, with impact on applications. The correlation between prompt neutrons and fragments emitted in binary neutron induced fission of 235 U has been studied at the GELINA facility. The experiment employs an array of proton recoil scintillators and a position-sensitive twin ionization chamber. This experimental arrangement permits measurement of the correlations between neutron emission, fragment angle, and mass and energy of the fission fragments. In this article, we present results on prompt fission neutron energy and multiplicity correlations with mass and total kinetic energy of the fission fragments. Results from the present measurement shows distinct differences compared to earlier studies of the correlated fission fragment and prompt neutron emission quantities. The differences with respect to earlier investigations are interpreted as improved fission fragment energy resolution in the present measurement. The present result supports several recent model calculations of prompt neutron and fission fragment correlations.

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Section: Determination Of the Pfnsmentioning

confidence: 99%

Prompt neutrons in correlation with fission fragments from U235(n,f)

et al. 2018

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“…6, the pulses have been recoded up to about 7 MeV. The scintillation light produced by heavy-charged particles and electrons in NE213 as a result of neutron and gamma-ray interactions can be derived through Cecil and Verbinski formulas discussed in Tajik et al (2013). Following these formulas, one may expect that the Am-Be neutron lights will not exceed 6 MeV and the gamma-rays either from the de-excitation of 13 C n nuclei (with 4.43 MeV energy) or as a result of neutron interactions with scintillator housing reaches maximum to 7 MeV.…”

Section: Resultsmentioning

confidence: 99%

Digital neutron-gamma discrimination in a wide energy range using pulse reconstruction method

Jamili¹,

Bayat

Afarideh

et al. 2015

Radiation Physics and Chemistry

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“…To correct for the energy dependent detection efficiency of the detectors and multiple scattering of neutrons on the surrounding materials the setup is modeled in GEANT4. The simulation uses the experimentally determined proton light output functions, for other recoil-particle species literature data is used [13,14]. The Monte-Carlo model has been validated against the 252 Cf(sf) PFNS [15].…”

Section: Analysis Of Pfn Datamentioning

confidence: 99%

Prompt neutron emission and energy balance in ²³⁵U(n,f)

2017

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Abstract. Investigations of prompt fission neutron (PFN) emission are of importance in understanding the fission process in general and the sharing of excitation energy among the fission fragments in particular. Experimental activities at JRC-Geel on PFN emission in response to OECD/NEA nuclear data requests is presented in this contribution. The focus lies on on-going investigations of PFN emission from the reaction 235 U(n,f) in the region of the resolved resonances taking place at the GELINA facility. For this reaction strong fluctuations of fission fragment mass distributions and mean total kinetic energy have been observed as a function of incident neutron energy in the resonance region. In addition, fluctuations of prompt neutron multiplicities have also been observed. The goal of the present study is to verify the current knowledge of PFN multiplicity fluctuations and to study correlations with fission fragment properties. The experiment employs a scintillation detector array for neutron detection, while fission fragment properties are determined via the double kinetic energy technique using a position sensitive twin ionization chamber.Results on PFN multiplicity correlations with fission fragment properties from the present study show significant differences compared to earlier studies on this reaction, induced by thermal neutrons. Specifically, the total kinetic energy dependence of the neutron multiplicity per fission shows an inverse slope ∂TKE/∂ν approximately 35% weaker than observed in earlier studies of thermal neutron induced fission on 235 U. The inverse slope is related to the energy carried away per emitted neutron and is, thereby, closely connected to the energy balance of the fission reaction. The present result should have strong impact on the modeling of both prompt neutron and prompt γ -ray emission in fission of the 236 U compound nucleus.

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Modeling NE213 scintillator response to neutrons using an MCNPX-PHOTRACK hybrid code

Cited by 25 publications

References 18 publications

Prompt neutrons in correlation with fission fragments from U235(n,f)

Prompt neutrons in correlation with fission fragments from U235(n,f)

Digital neutron-gamma discrimination in a wide energy range using pulse reconstruction method

Prompt neutron emission and energy balance in ²³⁵U(n,f)

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Modeling NE213 scintillator response to neutrons using an MCNPX-PHOTRACK hybrid code

Cited by 25 publications

References 18 publications

Prompt neutrons in correlation with fission fragments from U235(n,f)

Prompt neutrons in correlation with fission fragments from U235(n,f)

Digital neutron-gamma discrimination in a wide energy range using pulse reconstruction method

Prompt neutron emission and energy balance in 235U(n,f)

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Prompt neutron emission and energy balance in ²³⁵U(n,f)