A PHENOMENOLOGICAL MODEL FOR POSITRON TRAPPING AT DISLOCATIONS

XIONG Liang-Yue

Chinese Physics C> 1988, Vol. 12> Issue(4) : 433-439

A PHENOMENOLOGICAL MODEL FOR POSITRON TRAPPING AT DISLOCATIONS

XIONG Liang-Yue ^,

Institute of Metal Research,Academia Sinica,Shenyang

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Abstract：
A multi-state trapping model involving positron trapping at dislocations and jogs is proposed,in which the effect of positron detrapping can be omitted.According to this model the dislocations with variant jog density have different functions in positron Annihilation process.The case that dislocation trapping is predominant and the open-space ratio between dislocation core and single-vacancy were emphatically discussed.Using the data in some literature we have estimated the positron annihilated rate at dislocations and the jog interval on the dislocation line.The results obtained seems reasonable.

References

[1]

M. Doyama and R. M. J. Cotterill, Proc. 5th Int. Conf. on Positron Annihilation, (1979) Lake Yamanaka Japan, p. 89[2] M. Doyama, Proc. 5th Int. Conf. on Positron Annihilation, (1979) Lake Yaartanaka, Japan, p. 13.[3] G. Dlubek, G. Brauser, O. Brummer, W. Andeejcscheff, P. Manfrass, Phys. Stat. Soi., (a) 30(1975), K37.[4] C. L. Snead, A. N. Goland, J. H. Kusmiss, H. C. Huang, R. Meade, Phys. Rev., B3(1971), 275.[5] J. Baram, M. Rosen, Phys. Stat. Sol., (a) 16(1973), 263.[6] S. Saimoto, B. T. A. Mckee, A. T. Stewart,Phyr. Star. Sol (a) 21(I974), 623.[7] E. Kuramoto, K. Kitajima, M. Hasegawa and S.Koike, Proc 5th. lnt. Conf. Positron Annihilation, (1979) Lake Yamanaka, Japan, p. 505.[8] L. C. Smedskjaer, M. Manninen and M. J. Fluss, J. Phys. F, 10(1980), 2237.[9] J. Q. Shen, C. W. Lung, K. L. Wang, Proc. 7th Int. Conf. on Positron Annihilation, (1985) New Delhir India[10] R. N. West, in Positron in Solids, edited by P. Hautojarvi, Topics in Current Physics, Vol. 12 (Berlin,1979) 88.[11] S. Tanigawa and M. Doyama, in Progress in the Study of Application of Electron Theory to Materials Scie-nce, edited by M. Doyama (March, 1979) p. 1.[12] W. Brand t, in Positron Solid-State Physics, edited by W. Brandt and A. Dupasquier, (North-Holland, 1983)p .2.[13] G. Brauer, F. Kerbe, Zs. Kajcsos, and A. Ashty, Phyr. Stat. Sol., (a) 84(1984),朽1.[14] Cao Chuan, Wang Yun-yu, Xiong Xing-min, Xiong Liang-yue, Jiang Jian Proc. 6th Int. Conf. on Positron Annihilation, (1982) Arlington U. S. A. p. 479.[15] E. Kuramoto, Y. Aono, M. Takanaka and K. Kitajima, J. Phyr. Sac. Japan, 52(1983), 1098.

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[20]	WANG Shu-Ying . METHOD OF ANALYSING POSITRON ANNIHILATION LIFETIME SPECTRUM WITH A MULTI EXPONENTIAL CURVE FITTING. Chinese Physics C, 1983, 7(4): 408-414.

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XIONG Liang-Yue. A PHENOMENOLOGICAL MODEL FOR POSITRON TRAPPING AT DISLOCATIONS[J]. Chinese Physics C, 1988, 12(4): 433-439.

XIONG Liang-Yue. A PHENOMENOLOGICAL MODEL FOR POSITRON TRAPPING AT DISLOCATIONS[J]. Chinese Physics C, 1988, 12(4): 433-439. shu

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

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沈阳化工大学材料科学与工程学院沈阳 110142

A PHENOMENOLOGICAL MODEL FOR POSITRON TRAPPING AT DISLOCATIONS

Corresponding author: XIONG Liang-Yue,

Institute of Metal Research,Academia Sinica,Shenyang

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1988-08-05

Abstract: A multi-state trapping model involving positron trapping at dislocations and jogs is proposed,in which the effect of positron detrapping can be omitted.According to this model the dislocations with variant jog density have different functions in positron Annihilation process.The case that dislocation trapping is predominant and the open-space ratio between dislocation core and single-vacancy were emphatically discussed.Using the data in some literature we have estimated the positron annihilated rate at dislocations and the jog interval on the dislocation line.The results obtained seems reasonable.

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A PHENOMENOLOGICAL MODEL FOR POSITRON TRAPPING AT DISLOCATIONS

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