This letter is presenting a simple but effective mechanism that explains why ,during tritium aging, metal tritides retain most helium-3 for years and then suddenly release massive amount. The mechanism is based on the hypothesis that dislocations blocking could explain the sudden change of behavior. The modeling of this phenomenon combine a mechanical and microstructural approach. The calculations made with this mechanism fit all the aging data acquired on aged palladium tritide
Cite
@article{arxiv.2604.26697,
title = {Predicting massive helium-3 release from metal tritides using simple mechanical modeling},
author = {Berengere Evin and Dorian Gaboriau and Mathieu Segard and Sylvain Challet and Arnaud Fabre and Stephanie Thiebaut},
journal= {arXiv preprint arXiv:2604.26697},
year = {2026}
}