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<p>In this study, experimental results from neutron activation of gold and indium foils are compared with the activation simulated using PHITS and PHITS-DCHAIN codes. The aim was to evaluate the accuracy of these simulation methods for predicting the amount of induced activity in such foils. Neutron activation experiments were carried out using a 10&#xa0;Ci AmBe source at the University of Applied Sciences Aachen in Germany. Activities were determined using a modern BEGe detector by measuring the γ-ray spectra of decaying <sup>198</sup>Au and <sup>116m</sup>In. In the simulation, two methods were used to extract the activities: a direct flux analysis and a more detailed DCHAIN calculation. Generally, very good agreement of the activities within 15% is observed, which shows the reliable nuclear physics input and neutron transport calculation of the PHITS code for these kinds of experiments.</p>

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Benchmarking of the PHITS simulation code using neutron activation experiments for reliable calculations of neutron fields

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年2月15日

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  • Doruntin Shabani,
  • Srinivasa T. Rangaiah,
  • Christoph Langer,
  • Eric Mauerhofer,
  • Paul Zakalek,
  • Thomas Gutberlet

摘要

In this study, experimental results from neutron activation of gold and indium foils are compared with the activation simulated using PHITS and PHITS-DCHAIN codes. The aim was to evaluate the accuracy of these simulation methods for predicting the amount of induced activity in such foils. Neutron activation experiments were carried out using a 10 Ci AmBe source at the University of Applied Sciences Aachen in Germany. Activities were determined using a modern BEGe detector by measuring the γ-ray spectra of decaying 198Au and 116mIn. In the simulation, two methods were used to extract the activities: a direct flux analysis and a more detailed DCHAIN calculation. Generally, very good agreement of the activities within 15% is observed, which shows the reliable nuclear physics input and neutron transport calculation of the PHITS code for these kinds of experiments.