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MeV Neutron Production from Thermal Neutron Capture in 6Li Simulated with Geant4

Santoro, Valentina; Dijulio, Douglas D. LU and Bentley, Phillip M. LU (2016) In Journal of Physics: Conference Series 746(1).
Abstract

Various Li compounds are commonly used at neutron facilities as neutron absorbers. These compounds provide one of the highest ratios of neutron attenuation to y- ray production. Unfortunately, the usage of these compounds can also give rise to fast neutron emission with energies up to almost 16 MeV. Historically, some details in this fast neutron production mechanism can be absent from some modeling packages under some optimization scenarios. In this work, we tested Geant4 to assess the performance of this simulation toolkit for the fast neutron generation mechanism. We compare the results of simulations performed with Geant4 to available measurements. The outcome of our study shows that results of the Geant4 simulations are in good... (More)

Various Li compounds are commonly used at neutron facilities as neutron absorbers. These compounds provide one of the highest ratios of neutron attenuation to y- ray production. Unfortunately, the usage of these compounds can also give rise to fast neutron emission with energies up to almost 16 MeV. Historically, some details in this fast neutron production mechanism can be absent from some modeling packages under some optimization scenarios. In this work, we tested Geant4 to assess the performance of this simulation toolkit for the fast neutron generation mechanism. We compare the results of simulations performed with Geant4 to available measurements. The outcome of our study shows that results of the Geant4 simulations are in good agreement with the available measurements for 6 Li fast neutron production, and suitable for neutron instrument background evaluation at spallation neutron sources.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physics: Conference Series
volume
746
issue
1
publisher
IOP Publishing
external identifiers
  • scopus:84994234250
ISSN
1742-6588
DOI
10.1088/1742-6596/746/1/012012
language
English
LU publication?
yes
id
c888be66-d097-476c-bcf8-db48af9134b3
date added to LUP
2016-12-07 10:59:27
date last changed
2017-04-10 09:28:22
@article{c888be66-d097-476c-bcf8-db48af9134b3,
  abstract     = {<p>Various Li compounds are commonly used at neutron facilities as neutron absorbers. These compounds provide one of the highest ratios of neutron attenuation to y- ray production. Unfortunately, the usage of these compounds can also give rise to fast neutron emission with energies up to almost 16 MeV. Historically, some details in this fast neutron production mechanism can be absent from some modeling packages under some optimization scenarios. In this work, we tested Geant4 to assess the performance of this simulation toolkit for the fast neutron generation mechanism. We compare the results of simulations performed with Geant4 to available measurements. The outcome of our study shows that results of the Geant4 simulations are in good agreement with the available measurements for <sup>6</sup> Li fast neutron production, and suitable for neutron instrument background evaluation at spallation neutron sources.</p>},
  articleno    = {012012},
  author       = {Santoro, Valentina and Dijulio, Douglas D. and Bentley, Phillip M.},
  issn         = {1742-6588},
  language     = {eng},
  month        = {10},
  number       = {1},
  publisher    = {IOP Publishing},
  series       = {Journal of Physics: Conference Series},
  title        = {MeV Neutron Production from Thermal Neutron Capture in <sup>6</sup>Li Simulated with Geant4},
  url          = {http://dx.doi.org/10.1088/1742-6596/746/1/012012},
  volume       = {746},
  year         = {2016},
}