Work

Simulation of the buffer-IPyC interface cell from the TRISO nuclear fuel with LAMMPS

Year: 2025

Type: article

Abstract: The main advantage of the Tristructural Isotropic (TRISO) fuel is its four-layer coating, which prevents the release of fission products during reactor operation. Studies have shown that the behavior of the buffer-IPyC interface plays a crucial role in maintaining the integrity of the TRISO particle. In this study, we use molecular dynamics simulations to investigate the interface between these two structures and to provide insight into the atomic-level mechanisms responsible for irradiation-induced changes in the graphite-based structures. We identify the underlying mechanisms leading to swelling of the IPyC layer and reveal the effect of the interface on defect formation in the differing structures of the buffer and IPyC layers.

Source: Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms

DOI: 10.1016/j.nimb.2025.165916

Authors: N. Korepanova, Z.M. Krajewska-Travar, A.E. Sand

Institutions: Aalto University, National Centre for Nuclear Research

Language: English

Topic: Graphite, nuclear technology, radiation studies

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,810

OpenAlex ID: W4415964791

FWCI: 0.209

Cites: 51

Cited by: 1

Related to: