An empirical equation between track radii and melting temperatures and its consequences for insulators irradiated by swift heavy ions

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Abstract

A universal function Θ(r) describes the empirical relationship between track radii Re and melting temperatures Tm without involving any other materials parameters. The precise form of the function Θ(r) is derived. Track radii Re for mica and NiFe 2O4 are calculated from the experimental data of TeO 2 and Y3Fe5O12 by using only the Tm values and Θ(r). The good agreement of the calculated values with the data for low and high velocity projectiles confirm the validity of Θ(r) in a broad range of the electronic stopping power Se. Consequences for the damage cross-section velocity effect are discussed. Equations are derived from Θ(r) for the track evolution Re2-Se and the threshold value of Se for track formation which agree with the basic equations of the analytical thermal spike model.

Original languageEnglish
Pages (from-to)118-121
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume312
DOIs
Publication statusPublished - Sep 2 2013

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Keywords

  • Swift heavy ion
  • Thermal spike
  • Track
  • Velocity effect

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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