~(111)In离子在Ag中反冲引起的辐射损伤及激光退火效应

金属学报

1988, Vol. 24

Issue (2): 199-203

论文

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~(111)In离子在Ag中反冲引起的辐射损伤及激光退火效应

倪新伯;孙重文;陈文彪;卢庆千

中国科学院上海原子核研究所;中国科学院上海原子核研究所;上海嘉定;中国科学院上海原子核研究所;中国科学院上海原子核研究所

RADIATION DAMAGE OF ~(111)In NUCLEI RECOIL-IMPLANTED IN Ag BY TDPAC METHOD

NI Xinbo;SUN Chongwen;CHEN Wenbiao;LU Qingqian Shanghai Institute of Nuclear Research; Academia Sinica

引用本文:

倪新伯;孙重文;陈文彪;卢庆千. ~(111)In离子在Ag中反冲引起的辐射损伤及激光退火效应[J]. 金属学报, 1988, 24(2): 199-203.
, , , . RADIATION DAMAGE OF ~(111)In NUCLEI RECOIL-IMPLANTED IN Ag BY TDPAC METHOD[J]. Acta Metall Sin, 1988, 24(2): 199-203.

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摘要:

本实验利用TDPAC方法,通过30MeVα粒子束(2μA)引起的~(109)Ag(α,2n)~(111)In核反应产生的~(111)In离子,研究了~(111)In离子在Ag中反冲引起的重离子辐射损伤. 实验结果表明在α粒子剂量率4.2×10~(12)cm~(-2)s~(-1)情况下,即使在室温环境中,仍引起明显的重离子辐射损伤.这些损伤破坏了Ag立方晶体结构的对称性而产生一个高达10~(18)V/cm~2的电场梯度作用于~(111)Cd探针核.并说明其是双空位或空位环俘获~(111)Cd的结果.实验还进行了激光退火效应的研究,指出其与真空热退火相比的优越性.

关键词 ：辐射损伤, 激光退火效应, ~(111)In离子, 时间微分扰动角关联法

Abstract：

The radiation damage was studied on ~(111)In nuclei recoil implanted inAg following ~(109)Ag(α,2n)~(111)In reaction by TDPAC method. The Ag foils(20μm) wereirradiated with 30MeV α particles under room temperature, the particle dose ratebeing 4.2×10~(12)cm~(-2)s~(-1). The experimental results indicated that the radiation damagewas severe in Ag even at room temperature. An electric field gradient of 10~(18) V/cm~2which is due to the radiation damage has been put onto the ~(111)Cd probe. The cubic Ag lattice was destroyed and lots of vacancies and interstitials cre-ated in Ag by radiation. The divacancy trapping has been suggested and the laserannealing has been conducted.

Key words： radiation damage laser annealing ~(111)In time differential perturbation angle correlation (TDPAC)

收稿日期: 1988-02-18

基金资助:

国家自然科学基金委员会的资助

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