Electronic stopping power dependence of ion-track size in UO2 irradiated with heavy ions in the energy range of ∼1 MeV/u

N. Ishikawa, T. Sonoda, T. Sawabe, H. Sugai, M. Sataka

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

In order to investigate electronic stopping power dependence of ion-track size in UO2, ion-tracks in UO2 irradiated with various ions with the specific energy in the order of 1 MeV/u have been observed by a transmission electron microscope. The ion-track size shows monotonic increase as a function of the electronic stopping power. The ion-track size obtained for UO2 is smaller than that obtained for CeO2, although these two compounds have same crystallographic structure and similar thermal properties. The ion-track sizes for irradiations with ions having relatively low energy of about 1 MeV/u are smaller than those expected from the thermal spike models based on melting temperature criterion. The possible interpretations for the unusually small ion-tracks observed for UO2 are discussed.

Original languageEnglish
Pages (from-to)180-184
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume314
DOIs
Publication statusPublished - 2013

Keywords

  • Ion-tracks
  • Irradiation effect
  • Transmission electron microscopy
  • UO

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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