THE ACCURATE DETERMINATION OF SMALL VARIATIONS FOR THE PARAMETERS OF POSITRON LIFETIME SPECTRA IN AMORPHOUS ALLOY

XIONG Liang-Yue(L.Y.Xiong)

Chinese Physics C> 1986, Vol. 10> Issue(5) : 513-518

THE ACCURATE DETERMINATION OF SMALL VARIATIONS FOR THE PARAMETERS OF POSITRON LIFETIME SPECTRA IN AMORPHOUS ALLOY

XIONG Liang-Yue(L.Y.Xiong) ^,

Institute of Metal Research, Academia Sinica

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Abstract：
The method for the accurate determination of the small variation of positron lifetime spectrum parameters is described by the example of determining the positron lifetime variations by means of annealing in amorphous material. The comparison between the differential distributions by simulation calculation and by experimental measurement comfirms that the mean positron lifetimes in metallic glass Fe₆₇Co₁₈Si₁B₁₄after annealing at 200℃,300℃ and 375℃ are 0ps, 4.0ps and 4.3ps, respectivly, shorter than that in the nontreated reference sample.

References

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P. Hautojarvi, "Positrons in Solids" (1979).[2] 龙期威:《理论金属物理导论(2)》(初稿)(1983).[3] P. Kierkegaard and M. Eldrup, Compslter Phys. Commum., 7(1974), 401.[4] P. Kierkegaard and M. Eldrup, Computer Phys. Commum., 23 (1981), 307.[5] G. Aldi, A. Dupasquier and C. Regazzoni, Appl. Phys., A30(1983), 51.[6] Z. Bay, Phys. Rev., 77(1950), 419.[7] G. Aldi, A. Dupasquier, U La Malfa, S Re Fiorentin and C Regazzoni, J. Phys. F: Met. Phys.,12(1982), 2185.[8] L. Y. Xiong, Chinese Phys. Left., V3 N5(1986), 237.[9] P. Allia,E Vinai, A. Dupasquier, L Y. Xiong, A. Ferro and G. P. Soardo, J. Mag. Mag.Mat., 49(1985), 189-194.

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XIONG Liang-Yue(L.Y.Xiong). THE ACCURATE DETERMINATION OF SMALL VARIATIONS FOR THE PARAMETERS OF POSITRON LIFETIME SPECTRA IN AMORPHOUS ALLOY[J]. Chinese Physics C, 1986, 10(5): 513-518.

XIONG Liang-Yue(L.Y.Xiong). THE ACCURATE DETERMINATION OF SMALL VARIATIONS FOR THE PARAMETERS OF POSITRON LIFETIME SPECTRA IN AMORPHOUS ALLOY[J]. Chinese Physics C, 1986, 10(5): 513-518. shu

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Received: 1900-01-01
Revised: 1900-01-01

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