Department of Physics; Guangxi University; Nanning 530004
Cite this article:
DENG Wen; RUAN Xiangdong; HUANG Yuyang; ZHOU Yin'e; ZHU Yingying; ZHU Yingying. Effects Of Twin Size On The Dislocation Configuration During Cyclic Deformation Of Polycrystalline Twin Copper. Acta Metall Sin, 2005, 41(1): 33-.
Abstract Doppler--broadening spectra of positron annihilation radiation of Al, Ti, V, Cr,
Mn, Fe, Co, Ni, Cu, Zn and Ga have been measured by using 2--detector coincidence technique.
The lower background of the spectrum allows to obtain the contribution of
annihilations with core electrons. The experiments
show that the background decreases with increasing the distance between the
sample and the Ge detector. The magnitude of the peak of the ratio curve of Ni
(ratio to Al) increases with decreasing the background of the spectrum. For Ti, V,
Cr, Mn, Fe, Co, Ni and Cu, the heights of the peaks in the ratio curves rise
with increasing the number of 3d--electrons.
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