| 大角度晶界的正电子湮没研究 |
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| 引用本文： | 周先意,王淑英.大角度晶界的正电子湮没研究[J].核技术,1989,12(11):638-642. |
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| 作者姓名： | 周先意 王淑英 |
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| 作者单位： | 中国科学技术大学
(周先意，蒋惠林)，中国科学院高能物理研究所
(王淑英)，中国科学院金属研究所
(姜健)，中国科学院金属研究所(龙期威) |
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| 摘 要： |
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| 关 键 词： | 晶界 正电子湮没 饱和捕获 金属 |
A positron annihilation study on large angle grain boundaries |
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| Zhou Xianyi Jiang Huilin.A positron annihilation study on large angle grain boundaries[J].Nuclear Techniques,1989,12(11):638-642. |
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| Authors: | Zhou Xianyi Jiang Huilin |
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| Abstract: | The relationship between positron mean lifetime and grain size, based on two state trapping model, has been developed, and the saturation trapping at grain boundaries has been predicated. Experimetally, the relationship is tested and verified through the positron trapping at grain boundaries of Zn-22wt.%Al alloys. A general situation of positron trapping at large angle grain boundaries is discussed. |
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| Keywords: | Grain boundary Positron lifetime Saturation trapping |
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