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Abstract <p>We report results from a computational study of fission track damage within a Lexan substrate caused by <sup>235</sup>U suspended within a collodion film of varied thickness. MCNP6.3 was used to model energy deposition and displacements per atom within a Lexan film coated by a film of collodion, located within the air-filled 6 inch dry tube of a TRIGA reactor. The collodion layer was varied between 20 and 100&#xa0;μm thickness, resulting in an 8.8% difference in energy deposition and 12% difference in displacements-per-atom within the Lexan substrate. These findings indicate that collodion adhesive thickness has a moderate impact on the localized energy deposition and damage environment within Lexan. This sensitivity can inform high-precision forensic reconstructions where damage quantification is critical.</p> Graphical abstract <p></p>

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Impact of collodion thickness on fission track generation within Lexan employed for nuclear forensic analyses

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月11日

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  • Ryan Chapman,
  • Zach Meisel,
  • Abigail Bickley

摘要

Abstract

We report results from a computational study of fission track damage within a Lexan substrate caused by 235U suspended within a collodion film of varied thickness. MCNP6.3 was used to model energy deposition and displacements per atom within a Lexan film coated by a film of collodion, located within the air-filled 6 inch dry tube of a TRIGA reactor. The collodion layer was varied between 20 and 100 μm thickness, resulting in an 8.8% difference in energy deposition and 12% difference in displacements-per-atom within the Lexan substrate. These findings indicate that collodion adhesive thickness has a moderate impact on the localized energy deposition and damage environment within Lexan. This sensitivity can inform high-precision forensic reconstructions where damage quantification is critical.

Graphical abstract