POSITRON DISLOCATION TRAPPING MODEL INCLUDING THE EFFECTS OF DETRAPPING OF POSITRON FROM DISLOCATIONS

XIONG Liang-Yue; LONG Qi-Wei

Chinese Physics C> 1990, Vol. 14> Issue(9) : 769-776

POSITRON DISLOCATION TRAPPING MODEL INCLUDING THE EFFECTS OF DETRAPPING OF POSITRON FROM DISLOCATIONS

XIONG Liang-Yue ^, ,
LONG Qi-Wei

Institute of Metal Research,Academia Sinica,ShenyangInterational Centre for Material Physics,Academia Sinica,Shenyang

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Abstract：
A positron dislocation trapping model which considers the effects of positron detrapping from dislocations is given.The temperature dependence on α (the ratio between the number of positrons trapped directly from bulk into jogs and that of positrons trapped indirectly passing through the dislocation channel from bulk into jogs) and the initial temperature Ti that positrons are mainly annihilated at lislocation lines are discussed.

References

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M. Doyama and R.M. J. Cotterill, Proc. 5th Int. Conf. on Positron Annihilation, (1979) Lake Yamanaka,Japan, p. 89.[2] L. C. Smedskjaer,M. Manninen and M. J. Fluss, J. Phys., F10(1980), 2237.[3] L. Y. Xiong, Chinese Phys.Lett, vo1.3, No.S(1986), 237.[4] 熊良袱:高能物理与核物理，12(1988)，433; or High Energy Physics Nuclear Physics, V12 NI(1988), 9[5] Shi Dan, L. Y. Xiong, C. W. Lung: Positron-Dislocation lnteraction Studied in Deformed Zinc Single Crystal. (to be publicated in J.Phys, Conden. Matter).[6] J. Q.Shen, C. W. Lung, K. L. Wang,Proc 7th Int. Conf.on Positron Annihilation, (1985) New Delhi India,p. 592.[7] B. Path, H. E. Hansen, B. Nielsen, G. Trumpy and Petersen, Appl. Phys., A33(1982), 225.[8] C. Cao, Y. Y. Wang, X. M. Xiong, L. Y. Xiong, J. Jiang, Proc. 6th Int. Conf on Positron Annihilation,(1982) Arlington U. S. A., p. 473.[9] R. N. West, in Positron in Solids, edited by P. Hautoj vi, Topics in Current Physics, v.12 (Berlin, 1979)88.

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XIONG Liang-Yue and LONG Qi-Wei. POSITRON DISLOCATION TRAPPING MODEL INCLUDING THE EFFECTS OF DETRAPPING OF POSITRON FROM DISLOCATIONS[J]. Chinese Physics C, 1990, 14(9): 769-776.

XIONG Liang-Yue and LONG Qi-Wei. POSITRON DISLOCATION TRAPPING MODEL INCLUDING THE EFFECTS OF DETRAPPING OF POSITRON FROM DISLOCATIONS[J]. Chinese Physics C, 1990, 14(9): 769-776. shu

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

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