Modeling and Validation of Gadolinium Self Powered Neutron Detectors in a Transient Reactor

Abstract

Contributions to the electron current from the three components of a gadolinium SPND, emitter, insulator, and sheath, are identified, characterized, and quantified to provide information on how the SPND interacts within the transient neutron and photon flux of the TREAT to create a measurable current. These contributions are measured by defining the SPND interactions as a dose response function used within a Monte Carlo simulation of a TREAT experiment. The data obtained from the Monte Carlo simulations are then used to compare against two analytic models, developed by Jaschik and Warren, as well as the experimental results. It was found that the methodology used produced sufficiently accurate results, that the sheath has the highest total contribution to the current, and that while the analytic models sufficiently predict the emitter contribution, they have a very limited use due to not accounting for the sheath.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2022
Accession Number
AD1176822

Entities

People

  • Alexander L. Spring

Organizations

  • Air Force Institute of Technology

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Aluminum Oxides
  • Beta Decay
  • Detection
  • Detectors
  • Dielectrics
  • Electrons
  • Elements
  • Engineering
  • Gamma Rays
  • Governments
  • Materials
  • Monte Carlo Method
  • Neutron Absorption
  • Neutron Detectors
  • Neutron Flux
  • Nuclear Reactors
  • Simulations
  • United States Government

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Nuclear and Radiation Engineering.
  • Plasma Physics / Magnetohydrodynamics

Technology Areas

  • Microelectronics