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

Abstract
HTML
Reference
Related

PDF

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.

[1]	PEI Guo-Xi , SUN Yao-Lin , LIU Jin-Tong , CHI Yun-Long , LIU Yu-Cheng , LIU Nian-Zong . BEPCⅡ Positron Source. Chinese Physics C, 2006, 30(1): 66-70.
[2]	ZHOU Chun-Lan , ZHANG Tian-Bao , MA Chuang-Xing , ZHANG Zhi-Ming , CAO Xing-Zhong , WANG Bao-Yi , WEI Long . The Analysis of 3γ/2γ in the Measurement of Positron Annihilation Doppler-broadening Spectroscopy. Chinese Physics C, 2006, 30(1): 84-87.
[3]	KONG Wei , XI Chuan-Ying , YE Bang-Jiao , WENG Hui-Min , ZHOU Xian-Yi , HAN Rong-Dian . Two-Detector Doppler Broadening of Annihilation Radiation in Metals. Chinese Physics C, 2004, 28(11): 1234-1237.
[4]	ZHOU Chun-Lan , WANG Dan-Ni , HE Chuang-Xin , WANG Bao-Yi , WEI Long , HE Qing , JIA Quan-Jie . Study on Pores and Defect by Synthrotron Radiation Small Angle Reflection Method and Slow Positron Annihilation Technique. Chinese Physics C, 2003, 27(S1): 67-71.
[5]	GOU Wei-Ping , PEI Guo-Xi . Design of BEPCⅡ Positron Source. Chinese Physics C, 2002, 26(3): 279-285.
[6]	WANG Shu-Hong , WANG Jiu-Qing , YE Qiang , LE Qi . Minimization of Primary Electron Beam Radius at the Positron Production Target. Chinese Physics C, 2002, 26(12): 1302-1308.
[7]	Huang Maorong , Wang Yunyu , Yang Juhua , He Yongshu , Guo Yinghuan , Sun Tonghan . Study on InP Doped With Sulphur and Under DifferentTemperatures by Positron Annihilation. Chinese Physics C, 1996, 20(12): 1097-1102.
[8]	He Yuanjin , Xin Mingrui , Zhang Tianbao . Measurement of Characteristic Positron Annihilation Lifetime in HgCdTe. Chinese Physics C, 1994, 18(8): 752-756.
[9]	WU Ji-Min . Electron,Positron Distribution Function. Chinese Physics C, 1992, 16(6): 518-526.
[10]	ZHOU Xian-Yi , ZHANG Han , YUAN Song-Liu , WANG Shun-Xi , ZHU Jing-Sheng , ZHANG Qi-Rui . 1D-ACAR Spectra of YBa_2－xSr_xCu₃O_y. Chinese Physics C, 1991, 15(11): 961-965.
[11]	HUANG Mao-Rong , GU Hua , WANG Yun-Yu , HE Yong-Shu , YANG Ju-Hua , LIN Jian-Ming , XU Cheng-Huang . Study on KC1 Colorated Center Doped with Na⁺ Crystal by Positron Annihilation. Chinese Physics C, 1991, 15(2): 97-102.
[12]	CHEN Ji-Qiang , LONG Qi-Wei , WANG Ke-Lin . THREE STATE MODEL OF VACANCIES AND SMALL VACANCY CLUSTERS AND TEMPERATURE DEPENDENCE OF SPECIFIC TRAPPING RATE. Chinese Physics C, 1990, 14(2): 97-101.
[13]	WANG Shu-Ying , ZHANG Tian-Bao , SHENTU Yan-Min , WANG Hai-Dong , YANG Guang-Min . ON THE NATURE OF THE MEDIUM LIFETIME COMPONENT OF POSITRON ANNIHILATION IN TEFLON POLYMER. Chinese Physics C, 1990, 14(1): 1-7.
[14]	XIONG Liang-Yue , LONG Qi-Wei . POSITRON DISLOCATION TRAPPING MODEL INCLUDING THE EFFECTS OF DETRAPPING OF POSITRON FROM DISLOCATIONS. Chinese Physics C, 1990, 14(9): 769-776.
[15]	ZHANG Duan-Ming , LI Guo-Yuan , WANG Jian-An , HE Yuan-Jin . POSITRON ANNIHILATION STUDY OF PHASE TRANSITION IN HIGH-TEMPERATURE SUPERCONDUCTOR Y-Ba-Cu-O. Chinese Physics C, 1989, 13(9): 769-771.
[16]	SHEN Ji-Qiang , LONG Qi-Wei , ZHOU Jin , WANG Ke-Lin . ATOMIC DENSITY DISTRIBUTIONS OF GRAIN BOUNDARIES IN METALS AND CHARACTERISTICS OF POSITRON ANNIHILATION LIFETIME SPECTRA. Chinese Physics C, 1989, 13(10): 879-885.
[17]	XIONG Liang-Yue(L.Y.Xiong) . THE ACCURATE DETERMINATION OF SMALL VARIATIONS FOR THE PARAMETERS OF POSITRON LIFETIME SPECTRA IN AMORPHOUS ALLOY. Chinese Physics C, 1986, 10(5): 513-518.
[18]	XIONG Xing-Min . A STUDY OF DEFECTS DEFECTS IN GaAs BY POSITRON ANNIHILATION. Chinese Physics C, 1986, 10(4): 459-465.
[19]	XIE Jia-Lin . ON THE AVERAGE LUMINOSITY OF ELECTRON POSITRON COLLIDER AND POSITRON-PRODUING ENERGY. Chinese Physics C, 1985, 9(5): 577-585.
[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.

Access

Get Citation

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

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

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

Article Metric

Article Views(2613)
PDF Downloads(423)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
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.

HTML

Reference (1)

A PHENOMENOLOGICAL MODEL FOR POSITRON TRAPPING AT DISLOCATIONS

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article