The Analysis of 3γ/2γ in the Measurement of Positron Annihilation Doppler-broadening Spectroscopy

ZHOU Chun-Lan; ZHANG Tian-Bao; MA Chuang-Xing; ZHANG Zhi-Ming; CAO Xing-Zhong; WANG Bao-Yi; WEI Long

Chinese Physics C> 2006, Vol. 30> Issue(1) : 84-87

The Analysis of 3γ/2γ in the Measurement of Positron Annihilation Doppler-broadening Spectroscopy

Laboratory of Nuclear Analytical Technology,Institute of High Energy Physics,CAS,Beijing 100049,China

Abstract
HTML
Reference
Related

PDF

Abstract：
Doppler-broadening slow positron annihilation spectroscopy is used to measure the concentration, spatial distribution, and size of open-volume defects in surface and interface of material. In this method, the quantitative evaluation is generally carried out with the line shape parameter S and W, but sometimes the parameters provide some finite information. For example, if positron and electron form positronium (include o-Ps and p-Ps) in material, the parameters S and W may provide little information about positronium even complicate the analyses. A parameter I_3γ, defined as o-Ps self-decay intensity, was used to analyze Ag layer capped and non-capped silica aerogel by slow positron annihilation Doppler -broadening spectroscopy. The result shows that I_3γ can provide more information for researching mesoporous material and nanometer film.

References

[1]

. Canter K F, Jr Mills A P, Berko S. Phys. Rev. Lett., 1974,33: 7-102. Jr Mills A P. Phys. Rev. Lett., 1978, 41: 1828-18313. Lynn K G. Phys. Rev. Lett., 1979, 43:391-3944. Heitler W. The Quantum Theory of Radiation(3rd ed).New York: Oxford University Press, 19545. ZHANG Tian-Bao et al.HEP NP, 1990,14(4):289-295.(in Chinese)(张天宝等.高能物理与核物理,1990,14(4):289-295)6. CHANG Tian-Bao,T ANG Xiao-Wei,LI Yao-Qing. Phys.Lett.,1985, B157(5-6):357-3607. Debertin K. Nucl. Instrum.Methods,1979,165:279-2818. Vaninbroukx R, Denecke B. Nucl. Instrum. Methods,1982,193(1-2):191-196

[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]	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.
[3]	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.
[4]	XU Guo-Fa , TONG Guo-Liang , HUANG Xiu-Ping , LV Feng , YU Guo-Wei . Analysis of Φ Decay to 3γ Final States with the TELESIS. Chinese Physics C, 2002, 26(5): 462-470.
[5]	GOU Wei-Ping , PEI Guo-Xi . Design of BEPCⅡ Positron Source. Chinese Physics C, 2002, 26(3): 279-285.
[6]	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.
[7]	He Yuanjin , Xin Mingrui , Zhang Tianbao . Measurement of Characteristic Positron Annihilation Lifetime in HgCdTe. Chinese Physics C, 1994, 18(8): 752-756.
[8]	SHEN Qi-Xing , YU Hong . Determining the Spin and Parity of Particle X for the Process J/ψ→V₁,X→V₂+V₃ by Using the Generalized Moment Analysis Method. Chinese Physics C, 1993, 17(6): 503-510.
[9]	WU Ji-Min . Electron,Positron Distribution Function. Chinese Physics C, 1992, 16(6): 518-526.
[10]	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.
[11]	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.
[12]	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.
[13]	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.
[14]	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.
[15]	XIONG Liang-Yue . A PHENOMENOLOGICAL MODEL FOR POSITRON TRAPPING AT DISLOCATIONS. Chinese Physics C, 1988, 12(4): 433-439.
[16]	XIONG Xing-Min . A STUDY OF DEFECTS DEFECTS IN GaAs BY POSITRON ANNIHILATION. Chinese Physics C, 1986, 10(4): 459-465.
[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]	ZHANG Tian-Bao , TANG Xiao-Wei , WANG Yun-Yu , LI Yao-Qing , YIU Ke , WANG Shao-Jie . MEASUREMENT OF THE WHOLE GAMMA-RAY ENERGY SPECTRUM IN o-Ps 3 GAMMA-DECAY. Chinese Physics C, 1984, 8(4): 385-391.
[19]	LIU YONG , TIAN XIAO-CEN , YANG TSE-SEN . A MICROSCOPIC CALCULATION OF THE COLLECTIVE SPECTRA OF THE NEUTRON CONFIGURATIONS (CLOSED SHELLS)⁵⁰ (d_5/2g_7/2s_1/2d_3/2h_1/2)¹² BASED ON DYSON REPRESENTATION OF THE INTERACTING BOSON MODEL. Chinese Physics C, 1983, 7(6): 724-734.
[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

ZHOU Chun-Lan, ZHANG Tian-Bao, MA Chuang-Xing, ZHANG Zhi-Ming, CAO Xing-Zhong, WANG Bao-Yi and WEI Long. The Analysis of 3γ/2γ in the Measurement of Positron Annihilation Doppler-broadening Spectroscopy[J]. Chinese Physics C, 2006, 30(1): 84-87.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2005-04-11
Revised: 1900-01-01

Article Metric

Article Views(3000)
PDF Downloads(685)
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

The Analysis of 3γ/2γ in the Measurement of Positron Annihilation Doppler-broadening Spectroscopy

Corresponding author: ZHOU Chun-Lan,

Laboratory of Nuclear Analytical Technology,Institute of High Energy Physics,CAS,Beijing 100049,China

Received Date: 2005-04-11

Accepted Date: 1900-01-01

Available Online: 2006-01-05

Abstract: Doppler-broadening slow positron annihilation spectroscopy is used to measure the concentration, spatial distribution, and size of open-volume defects in surface and interface of material. In this method, the quantitative evaluation is generally carried out with the line shape parameter S and W, but sometimes the parameters provide some finite information. For example, if positron and electron form positronium (include o-Ps and p-Ps) in material, the parameters S and W may provide little information about positronium even complicate the analyses. A parameter I_3γ, defined as o-Ps self-decay intensity, was used to analyze Ag layer capped and non-capped silica aerogel by slow positron annihilation Doppler -broadening spectroscopy. The result shows that I_3γ can provide more information for researching mesoporous material and nanometer film.

HTML

Reference (1)

The Analysis of 3γ/2γ in the Measurement of Positron Annihilation Doppler-broadening Spectroscopy

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article