Structure and kinetics of cascades in copper under ion and/or electron irradiation

K. Fukumoto, C. Kinoshita, H. Abe, K. Shinohara, M. Kutsuwada

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

An in-situ observation system of radiation damage under ion and/or electron irradiation, which consists of a 1250 keV transmission electron microscope, an ion accelerator and an imaging system, is outlined. The microstructural evolution of cascades during dual beam irradiation with 30 keV Xe+ ions and 250 keV or 1000 keV electrons has been examined in copper at room temperature using the system. The density of cascades shows a linear increase followed by a square root dependence on irradiation time under irradiation with ions and 250 keV electrons. On the contrary, dual beam irradiation with 30 keV Xe+ ions and 1000 keV electrons gives a linear nucleation rate followed by a much slower nucleation rate eventually leading to saturation. The saturation value is lower at the higher 1000 keV electron flux. A kinetic equation for describing the microstructural evolution of cascades, which includes the effect of free interstitials produced by 1000 keV electrons, is proposed.

Original languageEnglish
Pages (from-to)935-938
Number of pages4
JournalJournal of Nuclear Materials
Volume179-181
Issue numberPART 2
DOIs
Publication statusPublished - 1991

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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