Internal probe to detect defects from cascades - In-situ ion irradiation experiments revisited

Shiori Ishino, Naoto Sekimura, Hiroaki Abe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Our understanding of the evolution of extended defects during irradiation has progressed considerably since 1990 following the proposal of production bias by Bachu Singh and C. H. Woo. One of the important phenomena underlying this concept is that self-interstitials and interstitial clusters can migrate a long distance via one-dimensional motion. There have been a number of indirect experimental evidences supporting this mode of migration. However, the direct evidence has not necessarily been sufficient. In this paper, we revisit our former experimental results of in-situ observation of ion irradiation damage from the stand point of an internal probe for detecting point defect fluxes in an irradiation environment or those coming from nearby cascades. Surfaces, giving rise to specimen size effects, preexisting dislocations, intentionally preintroduced vacancy loops with stacking fault, irradiation induced vacancy clusters and loops, precipitates and precipitate-matrix interfaces, etc., are utilized to monitor the influx of point defects, particularly those of interstitials nature. Some of the reanalysls of the former results will be presented.

Original languageEnglish
Title of host publicationEffects of Radiation on Materials
Subtitle of host publication23rd International Symposium
PublisherAmerican Society for Testing and Materials
Pages226-234
Number of pages9
ISBN (Print)9780803134218
Publication statusPublished - 2008 Jan 1
EventEffects of Radiation on Materials: 23rd International Symposium - San Jose, CA, United States
Duration: 2006 Jun 132006 Jun 15

Publication series

NameASTM Special Technical Publication
Volume1492 STP
ISSN (Print)0066-0558

Other

OtherEffects of Radiation on Materials: 23rd International Symposium
CountryUnited States
CitySan Jose, CA
Period06/6/1306/6/15

Keywords

  • Cascade
  • Defect clusters
  • In-situ TEM observation
  • Ion irradiation
  • Radiation damage

ASJC Scopus subject areas

  • Materials Science(all)

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  • Cite this

    Ishino, S., Sekimura, N., & Abe, H. (2008). Internal probe to detect defects from cascades - In-situ ion irradiation experiments revisited. In Effects of Radiation on Materials: 23rd International Symposium (pp. 226-234). (ASTM Special Technical Publication; Vol. 1492 STP). American Society for Testing and Materials.