What question did this study set out to answer?

This research aims to explore how varying collodion thickness affects fission track generation in a Lexan substrate.

April 13, 2026Open Access

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

Key Points

This research aims to explore how varying collodion thickness affects fission track generation in a Lexan substrate.
Utilized MCNP6.3 for modeling energy deposition in Lexan coated with collodion.
Examined collodion thickness variations from 20 to 100 μm.
Conducted analysis within a TRIGA reactor's air-filled dry tube setup.
Found an 8.8% difference in energy deposition with varying collodion thickness.
Observed a 12% difference in displacements per atom in the Lexan substrate due to collodion variance.
Indicated that collodion thickness moderately influences localized energy deposition and damage.

Abstract

Abstract We report results from a computational study of fission track damage within a Lexan substrate caused by 235 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 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

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