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arXiv · 2109.04401

Reconciling anomalously fast heating rate in ion tracks with low electron-phonon coupling

Nikita Medvedev·Alexander E. Volkov
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Abstract

Formation of swift heavy ion tracks requires extremely fast energy transfer between excited electrons and a lattice. However, electron-phonon energy exchange is too slow, as known from laser-irradiation experiments and calculations. We resolve this contradiction noticing that electron-phonon coupling is not the sole mechanism of energy exchange between electrons and ions: heating of electrons also alters potential energy surface of atoms, accelerating them and increasing their kinetic energy.

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Nikita Medvedev, Alexander E. Volkov. 2021-09-09. Reconciling anomalously fast heating rate in ion tracks with low electron-phonon coupling. https://doi.org/10.1063/5.0095724

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