Pulse height model for deuterated scintillation detectors

Wang, Haitang; Enqvist, Andreas

doi:10.1016/j.nima.2015.09.061

Title: Pulse height model for deuterated scintillation detectors

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Abstract

This work includes the theoretical calculation of pulse height distribution and elaborate measurement at Ohio University using deuterated organic scintillation detector, which allows us to thoroughly investigate the light output spectrum induced by fast neutrons and convincingly compensate the pulse deficiency due to application of threshold to minimize noises either from electronics or environmental background. Specifically, a complete and self-contained analytic model of pulse height distribution for EJ-315 is created. In the model, considering impacts of detector geometry on light output and neutron leakage, a non-uniform angular distribution is also taken into account. An energy range of incident neutron from 1 MeV to 10 MeV is investigated. In return, based on the Peierls-formula, the completed calculation exhibits quantitative probability of fast neutron slowing down history due to stochastic collisions with carbon or deuterium nuclei. The quantitative collision probability conjoining with light output function, which was measured and corrected in view of detector response to several gamma rays, for continuous neutron flux generated by the tandem Van De Graaff Generator gives the light output for various collisions. Furthermore, the individual collision structure of the light pulse spectrum is analyzed and compared to the corresponding pulse height distribution from experimental measurement. Lastly,more »« less

Authors:

Wang, Haitang ^[1]; Enqvist, Andreas ^[1]

Univ. of Florida, Gainesville, FL (United States)

Publication Date:: Mon Sep 28 00:00:00 EDT 2015

Research Org.:: Univ. of Michigan, Ann Arbor, MI (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation

OSTI Identifier:: 1487075

Grant/Contract Number:: NA0002534

Resource Type:: Accepted Manuscript

Journal Name:: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

Additional Journal Information:: Journal Volume: 804; Journal Issue: C; Journal ID: ISSN 0168-9002

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; Light pulse distribution; Deuterated scintillation detectors; Pulse shape discrimination; EJ-315

Citation Formats


                    Wang, Haitang, and Enqvist, Andreas. Pulse height model for deuterated scintillation detectors.  United States: N. p., 2015. 
Web.  doi:10.1016/j.nima.2015.09.061.

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                    Wang, Haitang, & Enqvist, Andreas. Pulse height model for deuterated scintillation detectors.  United States.  https://doi.org/10.1016/j.nima.2015.09.061

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                    Wang, Haitang, and Enqvist, Andreas. Mon .  
"Pulse height model for deuterated scintillation detectors".  United States.  https://doi.org/10.1016/j.nima.2015.09.061.  https://www.osti.gov/servlets/purl/1487075.

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@article{osti_1487075,

  title        = {Pulse height model for deuterated scintillation detectors},

  author       = {Wang, Haitang and Enqvist, Andreas},

  abstractNote = {This work includes the theoretical calculation of pulse height distribution and elaborate measurement at Ohio University using deuterated organic scintillation detector, which allows us to thoroughly investigate the light output spectrum induced by fast neutrons and convincingly compensate the pulse deficiency due to application of threshold to minimize noises either from electronics or environmental background. Specifically, a complete and self-contained analytic model of pulse height distribution for EJ-315 is created. In the model, considering impacts of detector geometry on light output and neutron leakage, a non-uniform angular distribution is also taken into account. An energy range of incident neutron from 1 MeV to 10 MeV is investigated. In return, based on the Peierls-formula, the completed calculation exhibits quantitative probability of fast neutron slowing down history due to stochastic collisions with carbon or deuterium nuclei. The quantitative collision probability conjoining with light output function, which was measured and corrected in view of detector response to several gamma rays, for continuous neutron flux generated by the tandem Van De Graaff Generator gives the light output for various collisions. Furthermore, the individual collision structure of the light pulse spectrum is analyzed and compared to the corresponding pulse height distribution from experimental measurement. Lastly, the resulting light pulse height distribution generated in this model offers intriguing advantages for identifying or characterizing nuclear materials and estimating potentials of various fast recoil detectors.},

  doi          = {10.1016/j.nima.2015.09.061},

  journal      = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},

  number       = C,

  volume       = 804,

  place        = {United States},

  year         = {Mon Sep 28 00:00:00 EDT 2015},

  month        = {Mon Sep 28 00:00:00 EDT 2015}

}

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