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MCNP simulation and experimental study in situ low-grade copper analysis based on PGNAA.

Cao Jie1, Wang Reng-Bo2, Zhang Yan3

  • 1College of Mechanical and Electronic Engineering, East China University of Technology, Nanchang, 330013, China; Engineering Research Center of Ministry of Education for Nuclear Technology Application, East China University of Technology, Nanchang, 330013, China; New Energy Technology and Equipment Engineering Research Center of Jiangxi Province, Nanchang, 330013, China.

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
|February 7, 2024
PubMed
Summary

A new prompt gamma neutron activation analysis (PGNAA) facility was developed for in situ copper analysis. This method achieved a minimum detectable copper concentration of 0.218%, demonstrating its effectiveness for low-grade samples.

Keywords:
(252)CfCopperMonte Carlo simulationPGNAA

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Area of Science:

  • Nuclear Physics
  • Analytical Chemistry
  • Materials Science

Background:

  • Prompt Gamma Neutron Activation Analysis (PGNAA) is a nuclear technique used for elemental analysis.
  • In situ analysis offers advantages for certain sample types and environments.
  • Developing efficient PGNAA facilities is crucial for accurate material characterization.

Purpose of the Study:

  • To develop and validate a prompt gamma neutron activation analysis (PGNAA) facility for in situ copper analysis.
  • To optimize the design of the PGNAA facility using Monte Carlo simulations.
  • To determine the minimum detectable concentration and accuracy of the developed PGNAA system for copper.

Main Methods:

  • Utilized a Californium-252 (252Cf) neutron source for the PGNAA facility.
  • Employed MCNP (Monte Carlo N-Particle) simulations to optimize neutron moderator, gamma-ray shielding, and thermal neutron absorber.
  • Constructed the PGNAA facility based on simulation-optimized parameters and experimentally measured copper samples with varying concentrations (0% to 2%).

Main Results:

  • The developed PGNAA facility successfully analyzed copper samples.
  • The minimum detectable concentration (MDC) for copper was determined to be 0.218%.
  • The maximum relative deviation for copper concentration measurements was 8.53%.

Conclusions:

  • The developed PGNAA facility is suitable for in situ analysis of copper, particularly for low-grade concentrations.
  • The optimization using MCNP simulations was effective in designing the PGNAA facility.
  • The system demonstrates acceptable accuracy for copper determination within the tested range.