The Irradiation Effect of a Simultaneous Laser and Electron Dual-beam on Void Formation

被引：9

作者：

Yang, Zhanbing ^{[1
]}

Watanabe, Seiichi ^{[1
]}

Kato, Takahiko ^{[2
]}

机构：

[1] Hokkaido Univ, Fac Engn, Ctr Adv Res Energy & Mat, Kita Ku, Sapporo, Hokkaido 0608628, Japan

[2] Hitachi Ltd, Hitachi Res Lab, Hitachi, Ibaraki 3191292, Japan

来源：

SCIENTIFIC REPORTS | 2013年 / 3卷

关键词：

DISLOCATION LOOPS; DEFECT PRODUCTION; RADIATION; GROWTH; METALS; ION; PROGRESS;

D O I：

10.1038/srep01201

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Randomly distributed lattice point defects such as supersaturated vacancies (SVs) and Frenkel-pairs (FPs, an interstitial and a vacancy) can be simultaneously introduced into the crystal by energetic beam irradiation in outer space and/or nuclear reactors, but their behavior has not been fully understood. Using a high-voltage electron microscope equipped with a laser (laser-HVEM), we show the striking effects of simultaneous laser-electron (photon-electron) dual-beam irradiation on void formation. Our results reveal that during laser-electron sequential irradiation, pre-laser irradiation enhanced void nucleation and subsequent electron irradiation enhanced void growth. However, the laser-electron dual-beam irradiation was analyzed to depress void swelling remarkably because the recombination of SVs and interstitials was enhanced. The results provide insight into the mechanism underlying the dual-beam radiation-induced depression of void swelling in solids.

引用

页数：6

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