A systematic study of the Re-Tm relation (Re = track radius, Tm = melting temperature) in insulators reveals new features of track formation. A quantitative relationship is demonstrated between Re values measured in various solids when ⟨se⟩=constant (⟨se⟩ = atomic stopping power). This effect is the consequence of a composition-independent, identical maximum temperature distribution ΔT(r,0), which is induced in various insulators in a narrow cylindrical volume close to the tracks. The uniformity ceases gradually at larger distances. ΔT(r,0) has a Gaussian shape, with a constant width w=4.5 nm, is independent of materials parameters and it can be determined experimentally by the measurement of Re in various insulators when ⟨se⟩=constant. The consequences of the experimental ΔT(r,0) distribution are discussed.
@article{arxiv.2202.13971,
title = {Composition-independent temperature induced by swift heavy ions in insulators and its relation with track formation},
author = {Gyorgy Szenes},
journal= {arXiv preprint arXiv:2202.13971},
year = {2022}
}