Electron ejection by heavy particles as precursor of track formation in condensed matter

Rothard, H.

doi:10.1016/j.nimb.2004.05.034

Cited by 13 publications

(1 citation statement)

References 63 publications

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“…Although the ion energy loss and deposited energy density are equal deep within the material, deposited energy density can be less than the ion energy loss close to the surface of the material. The reason for this can be found in the emission of the electrons from the surface [ 11 ] that can take away significant portion of the deposited energy [ 12 ]. One would expect this effect to make surface more resistant to material damage, but there are other competing processes occurring in later stages of ion track formation.…”

Section: Introductionmentioning

confidence: 99%

Energy Retention in Thin Graphite Targets after Energetic Ion Impact

2021

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High energy ion irradiation is an important tool for nanoscale modification of materials. In the case of thin targets and 2D materials, which these energetic ions can pierce through, nanoscale modifications such as production of nanopores can open up pathways for new applications. However, materials modifications can be hindered because of subsequent energy release via electron emission. In this work, we follow energy dissipation after the impact of an energetic ion in thin graphite target using Geant4 code. Presented results show that significant amount of energy can be released from the target. Especially for thin targets and highest ion energies, almost 40% of deposited energy has been released. Therefore, retention of deposited energy can be significantly altered and this can profoundly affect ion track formation in thin targets. This finding could also have broader implications for radiation hardness of other nanomaterials such as nanowires and nanoparticles.

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Section: Introductionmentioning

confidence: 99%