Xianyi Zhou, Huilin Jiang, Shuying Wang, et al. A positron annihilation study on large angle grain boundaries[J]. Nuclear techniques, 1989, 12(11): 638-642.
Xianyi Zhou, Huilin Jiang, Shuying Wang, et al. A positron annihilation study on large angle grain boundaries[J]. Nuclear techniques, 1989, 12(11): 638-642.DOI:
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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