Velocity effect in swift heavy ion irradiation: how the low- and high-energy track formation thresholds meet

0584069 - ÚFP 2024 RIV DE eng J - Článek v odborném periodiku
Rymzhanov, R. A. - Medvedev, Nikita - Volkov, A.E.
Velocity effect in swift heavy ion irradiation: how the low- and high-energy track formation thresholds meet.
Journal of Materials Science. Roč. 58, č. 35 (2023), s. 14072-14079. ISSN 0022-2461. E-ISSN 1573-4803
Grant CEP: GA MŠMT LTT17015; GA MŠMT(CZ) LM2018114; GA MŠMT EF16_013/0001552
Institucionální podpora: RVO:61389021
Klíčová slova: swift heavy ion * thresholds * kinetics
Obor OECD: Materials engineering
Impakt faktor: 4.5, rok: 2022
Způsob publikování: Omezený přístup
https://link.springer.com/article/10.1007/s10853-023-08898-2

Variations of the threshold of swift heavy ion track formation with the ion energy and mass are studied here. We apply the hybrid multiscale approach combining TREKIS-3 code describing the electronic kinetics with the classical molecular dynamics tracing the evolution of the excited lattice. The results demonstrate that with a lowering of the energy loss curve (by choosing lighter ions for irradiation), the high-velocity threshold starts to shift down, whereas the low-velocity one remains constant until the thresholds meet. For certain ion parameters, a situation is possible in which both thresholds (low- and high-velocity) lie at the low-energy shoulder of the Bragg curve which results from the mismatch between the ion energy positions of the maximal track radius and the Bragg peak.
Trvalý link: https://hdl.handle.net/11104/0352076