TY - GEN
T1 - Internal probe to detect defects from cascades - In-situ ion irradiation experiments revisited
AU - Ishino, Shiori
AU - Sekimura, Naoto
AU - Abe, Hiroaki
PY - 2008/1/1
Y1 - 2008/1/1
N2 - 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.
AB - 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.
KW - Cascade
KW - Defect clusters
KW - In-situ TEM observation
KW - Ion irradiation
KW - Radiation damage
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M3 - Conference contribution
AN - SCOPUS:62849124499
SN - 9780803134218
T3 - ASTM Special Technical Publication
SP - 226
EP - 234
BT - Effects of Radiation on Materials
PB - American Society for Testing and Materials
T2 - Effects of Radiation on Materials: 23rd International Symposium
Y2 - 13 June 2006 through 15 June 2006
ER -