Chinese Physics C > 2008, Vol. 32 > Issue(S2): 205-209

Measurements of⁷⁹Se with AMS based on extracting molecular negative ions

Abstract
HTML
Reference
Related

PDF

Abstract：
A new method for measuring selenium-79 with AMS, which is based on extracting molecular negative ions, is described in this paper. According to the experimental results, the extraction ion form SeO₂^－could depress the interference of Bromine-79 as much as 5 order levels, that is to say, the background of⁷⁹Br can be deducted to⁷⁹Br/Se≈10^－10. By the way, the chemical form of sample and preparation flow was also developed. Finally, three⁷⁹Se AMS calibration standard samples with theoretical⁷⁹Se/Se ratios of 5.06×10^－7, 6.87×10^－8, 5.40×10^－10were obtained and the method of⁷⁹Se measurement was set up, which actualized transmission and detection of⁷⁹Se. By using our Bragg curve detector, the two isobars⁷⁹Br and⁷⁹Se could be partly identified to a certain extent and⁷⁹Se can be identified from⁷⁹Br about 1 order level. AMS measurements of the three calibration standard samples above were performed and good linearity was obtained. The sensitivity of the measurement is (5.16±1.80)×10^－11.

References

[1]

. HE Ming, JIANG Song-Sheng, JIANG Shan et al. Nucl.Instrum. Methods B, 2002, 194: 3932. ZHOU Chun-Mei, WU Zhen-Dong. Atomic Energy Scienceand Technology, 2006, 40-4 (in Chinese)3. LIU Jian-Fu, ZHANG Jin-Jie, ZHANG Yong-Kang. Jour-nal of Jishou University (Nature Science Edition) 1997, 18-3(in Chinese)4. Clark C, Kalkin B, Krongrad A et al. Decreased Incidenceof Prostate Cancer With Selenium Supplementation: Re-sults of a Double-Blind Cancer Prevention Trial [J] Br JUrol, 1998, 81(5): 730-7345. LUSH D T. Preventing Heart Disease and Cancer. WhatRandomized, Primary-Prevention Studies Show [J]. Post-grad Med, 1999, 106(5): 143-1486. BAUM M K, Shor-Posner G, LAI S et al. High Risk ofHIV-Related Mortality ls Associated With Selenium De -ciency [J]. J Acquir Immune De c Syndr Hum Retrovirol,1997, 15(5): 370-3747. CHEN C Y, ZHOU J Y, XU H B et al. E ect of SeleniumSupplenemtation on Mice Infected With LP-BM5 MuLV, aMurine AIDS Model [J]. Biol. Trace. Element. Res., 1997,59(1-3): 187-1938. YU R, GUO J, CUI A et al. J. Radianal. Nucl. Chem.,1995, 196(1): 1659. JIANG Song-Sheng, HE Ming, DIAO Li-Jun et al. Nucl.Instrum. Methods A, 2002, 489: 195-20110. Philippe B, Philippe C, Gilbert A. Appl. Radiat. Isotopes,2007, 65: 35511. REN Tong-Xiang, ZHANG Ji-Long, PAN Jing-Shun. Mea-surements of 79Se Half Life. et al. CNRCS 2007 (in Chinese)12. Dewberry R A, Leyba J D, Boyce W T, Radianal J. Nucl.Chem., 2000, 245(3): 49113. Jerome C, Philippe B, Eric B et al. J. Anal. At. Spectrom,2003, 18: 702-70714. Sandrine Aguerre, Carole Frechou. Talanta, 2006, 69:565-57115. Carol Frechou, Sandrine Aguerre, Jean-Pierre Degros. Ta-lanta, 2007, 72: 1166-117116. Rugel G, Dillmann I, Faestermann T et al. Nucl. Instrum.Methods B, 2007, 259μ68317. JIANG Song-Sheng. Physics, 1985, 14(8): 481 (in Chinese)18. HE Ming, JIANG Shan, JIANG Song-Sheng et al. Nucl.Instrum. Methods B, 2004, 223-224: 7819. LI Chao-Li, WANG Wei, HE Ming et al. A Bragg CurveDetector and Its Application in AMS Measurements forMedium-Weight Nuclides (this publication)(in Chinese)

Access

Get Citation

WANG Wei, LI Chao-Li, HE Ming, WU Shao-Yong and JIANG Shan. Measurements of ⁷⁹Se with AMS based on extracting molecular negative ions[J]. Chinese Physics C, 2008, 32(S2): 205-209.

WANG Wei, LI Chao-Li, HE Ming, WU Shao-Yong and JIANG Shan. Measurements of ⁷⁹Se with AMS based on extracting molecular negative ions[J]. Chinese Physics C, 2008, 32(S2): 205-209. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2008-07-17
Revised: 1900-01-01

Article Metric

Article Views(5641)
PDF Downloads(632)
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

Measurements of⁷⁹Se with AMS based on extracting molecular negative ions

Corresponding author:WANG Wei,

Received Date:2008-07-17
Accepted Date:1900-01-01
Available Online:2008-01-03

Abstract:A new method for measuring selenium-79 with AMS, which is based on extracting molecular negative ions, is described in this paper. According to the experimental results, the extraction ion form SeO₂^－could depress the interference of Bromine-79 as much as 5 order levels, that is to say, the background of⁷⁹Br can be deducted to⁷⁹Br/Se≈10^－10. By the way, the chemical form of sample and preparation flow was also developed. Finally, three⁷⁹Se AMS calibration standard samples with theoretical⁷⁹Se/Se ratios of 5.06×10^－7, 6.87×10^－8, 5.40×10^－10were obtained and the method of⁷⁹Se measurement was set up, which actualized transmission and detection of⁷⁹Se. By using our Bragg curve detector, the two isobars⁷⁹Br and⁷⁹Se could be partly identified to a certain extent and⁷⁹Se can be identified from⁷⁹Br about 1 order level. AMS measurements of the three calibration standard samples above were performed and good linearity was obtained. The sensitivity of the measurement is (5.16±1.80)×10^－11.