Evaluation of linac-based delayed gamma neutron activation technique for copper characterization in scrap metal by means of Monte Carlo modeling - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Access content directly
Journal Articles Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Year : 2022

Evaluation of linac-based delayed gamma neutron activation technique for copper characterization in scrap metal by means of Monte Carlo modeling

Abstract

Delayed gamma rays following neutron activation, induced by a 6 MeV linear electron accelerator (linac) coupled to a deuterium oxide photo-neutron conversion target, are simulated with MCNP6.1. The 1039 keV copper activation gamma peak is detected with a 33 % relative efficiency hyper pure germanium detector. Two copper distributions were assessed for a 2-hour irradiation followed by a 2-hour counting configuration. Homogeneously distributed copper in a planar scrap metal matrix shows 65Cu detection limits of 10.01 g. A solid copper sample, modeled at five distinct positions in the planar scrap metal matrix, exhibits detection limits from 8.27 to 14.27 grams.
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Dates and versions

cea-03813392 , version 1 (14-10-2022)

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Roberto de Stefano, Aly Elayeb, Adrien Sari, Hamid Makil, Philippe Russo, et al.. Evaluation of linac-based delayed gamma neutron activation technique for copper characterization in scrap metal by means of Monte Carlo modeling. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2022, ⟨10.1016/j.nima.2022.167441⟩. ⟨cea-03813392⟩
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