Blister formation at subcritical doses in tungsten irradiated by MeV protons

I. Gavish Segev, E. Yahel, I. Silverman, G. Makov

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

The material response of tungsten to irradiation by MeV protons has been studied experimentally, in particular with respect to bubble and blister formation. Tungsten samples were irradiated by 2.2 MeV protons at the Soreq Applied Research Accelerator Facility (SARAF) to doses of the order of 1017 protons/cm2 which are below the reported critical threshold for blister formation derived from keV range irradiation studies. Large, well-developed blisters are observed indicating that for MeV range protons the critical threshold is at least an order of magnitude lower than the lowest value reported previously. The effects of fluence, flux, and corresponding temperature on the distribution and characteristics of the obtained blisters were studied. FIB cross sections of several blisters exposed their depth and structure.

Original languageEnglish
Pages (from-to)77-84
Number of pages8
JournalJournal of Nuclear Materials
Volume496
DOIs
StatePublished - 1 Dec 2017

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • General Materials Science
  • Nuclear Energy and Engineering

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