JSAP Review
Online ISSN : 2437-0061
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The first formation of ion tracks in diamond via MeV C60 ion irradiation
Hiroshi Amekura
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JOURNAL OPEN ACCESS

2025 Volume 2025 Article ID: 250206

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Abstract

Injecting high-energy heavy ions into solids can create cylindrical damage zones called ion tracks. The most accepted mechanism for ion track formation is the inelastic thermal spike (i-TS) model in which molten regions induced by large energy deposition along the ion trajectories transform to tracks after quenching. However, diamond, which is in a meta-stable state, does not melt with heating but transforms to a stable state (i.e., graphite). While no tracks have ever been observed in diamond, we successfully formed tracks under MeV C60 ion irradiation. Track formation via a non-melting route is presented herein.

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