Chinese Physics C > 2014, Vol. 38 > Issue(10): 106204 DOI: 10.1088/1674-1137/38/10/106204

Measurement of the half-life of⁷⁹Se with accelerator mass spectrometry

Abstract
HTML
Reference
Related

PDF

Abstract：
The accelerator mass spectrometry (AMS) is an effective method for the determination of the half-life of long-lived radionuclides. In this paper, we report a method for measurement of the half-life of ⁷⁹Se. The number of ⁷⁹Se atoms was determined from measured ⁷⁹Se/Se absolute ratios with the AMS system at the China Institute of Atomic Energy and the decay rate of ⁷⁹Se was determined by counting the emitted β-rays with a liquid scintillation spectrometer. The major improvements of our measurements include using the high abundance of an ⁷⁹Se sample which was cooled for many years to exclude the interference of short-lived nuclides, the extraction of SeO ₂ ^-molecular ions, that results in a suppression of the ⁷⁹Br background by as much as about five orders of magnitude. Also, an AMS measurement of the absolute ratio of ⁷⁹Se/Se was developed to avoid systematic errors. The results show that ⁷⁹Se/Se is (2.35±0.12)×10 ^-7in the reference sample and the radioactivity of ⁷⁹Se is (1.24±0.05) Bq/g, so the half-life of ⁷⁹Se is (2.78±0.18)×10 ⁵a.

References

[1]

Séby F, Pointin-Gautier M, Giffaut E et al. Analysis, 1998, 26: 193[2] CHEN F R, Peter C, Rodbey C et al. Nucl. Mater, 1999, 275: 81[3] Parker G W, Creek G E, Hebert G M et al. Nucl. Mater, 1949, 499: 45[4] Mcaninch J E, Bench G S, Freeman S P H T et al. Nucl. Instrum. Methods B, 1995, 99: 541[5] YU R, GUO J, CUI A et al. Nucl. Radiochem, 1995, 17: 33 (In Chinese)[6] HE M, JIANG S S, JIANG S et al. Nucl. Instrum. Methods B, 2002, 194: 392[7] JIANG S S, HE M, DIAO L J et al. Nucl. Instrum. Methods A, 2002, 489: 195[8] Bienvenua P, Cassette P, Andreoletti G et al. Applied Radiation and Isotopes, 2007, 65: 355[9] Jrg G, Bühnemann R, Hollasb S et al. Nucl. Instrum. Applied Radiation and Isotopes, 2010, 68: 2339[10] WANG W, GUAN Y J, HE M et al. Nucl. Instrum. Methods B, 2010, 268: 759[11] Stan-Sion C, Letourneau A, Reithmeier H et al. Nucl. Instrum. Methods B, 2007, 259(1): 739

[1]	Qi Zeng,Bushi Huang,Tingwei Peng,Hongfu Li,Xing Xu,Yuanming Xing,Huaiqiang Zhang,Jiankun Zhao,Xu Zhou. A novel method of half-life determination for highly charged ions based on isochronous mass spectrometry. Chinese Physics C, 2025, 49(11): 114002.doi:10.1088/1674-1137/ade959
[2]	Zhi-Xing Zhang,Jian-Min Dong. A formula for half-life of proton radioactivity. Chinese Physics C, 2018, 42(1): 014104.doi:10.1088/1674-1137/42/1/014104
[3]	Li Zhang,Yun-Chong Fu. Preliminary study of¹⁰Be/⁷Be in rainwater from Xi'an by Accelerator Mass Spectrometry. Chinese Physics C, 2017, 41(1): 018201.doi:10.1088/1674-1137/41/1/018201
[4]	XU Xing,WANG Meng,SHUAI Peng,CHEN Rui-Jiu,YAN Xin-Liang,ZHANG Yu-Hu,YUAN You-Jin,XU Hu-Shan,ZHOU Xiao-Hong,Yuri A,Sergey Litvinov,TU Xiao-Lin,CHEN Xiang-Cheng,FU Chao-Yi,GE Wen-Wen,GE Zhuang,HU Xue-Jing,HUANG Wen-Jia,LIU Da-Wei,XING Yuan-Ming,ZENG Qi,ZHANG Wei. A data analysis method for isochronous mass spectrometry usingtwo time-of-flight detectors at CSRe. Chinese Physics C, 2015, 39(10): 106201.doi:10.1088/1674-1137/39/10/106201
[5]	WANG Bo,ZENG Rong,NIU Ben,SHEN Xiao-Li,SHEN Xiao-Kang,CAO Shu-Chun,ZHANG Zi-Min.E-field measurement of a pulse line ion accelerator. Chinese Physics C, 2013, 37(7): 077003.doi:10.1088/1674-1137/37/7/077003
[6]	YUAN Xi,ZHANG Xing,XIE Xu-Fei,CHEN Zhong-Jing,PENG Xing-Yu,FAN Tie-Shuan,CHEN Jin-Xiang,LI Xiang-Qing,YUAN Guo-Liang,YANG Qing-Wei,YANG Jin-Wei. First neutron spectrometry measurement at the HL-2A Tokamak. Chinese Physics C, 2013, 37(12): 126001.doi:10.1088/1674-1137/37/12/126001
[7]	H. Hassanabadi,A. A. Rajabi,H. Rahimov,S. Zarrinkamar. Half-life of bismuth isotopes predicted by the Coulomb and proximity potential model; a proposition for the spherical nuclei. Chinese Physics C, 2012, 36(10): 964-966.doi:10.1088/1674-1137/36/10/008
[8]	WANG Xiang-Gao,HE Ming,SHI Guo-Zhu,LI Chao-Li,WANG Wei,ZHANG Da-Wei,HUANG Chun-Tang,SHEN Hong-Tao,WU Shao-Lei,HE Guo-Zhu,WU Shao-Yong,JIANG Shan. Primary result of²³⁶U measurement with accelerator mass spectrometry at CIAE. Chinese Physics C, 2010, 34(2): 192-197.doi:10.1088/1674-1137/34/2/007
[9]	TU Xiao-Lin,XU Hu-Shan,XIA Jia-Wen,WANG Meng,MAO Rui-Shi,YUAN You-Jin,HU Zheng-Guo,LIU Yong,ZHANG Hong-Bin,ZANG Yong-Dong,ZHAO Tie-Cheng,ZHANG Xue-Ying,FU Fen,YANG Jian-Cheng,MAO Li-Jun,XIAO Chen,XIAO Guo-Qing,ZHAO Hong-Wei,ZHAN Wen-Long. A pilot experiment for mass measurement at CSRe. Chinese Physics C, 2009, 33(7): 516-520.doi:10.1088/1674-1137/33/7/003
[10]	HUANG Wen-Xue,XIAO Guo-Qing,WANG Yue,TIAN Yu-Lin,ZHU Zhi-Chao,XU Hu-Shan,ZHAN Wen-Long. High precision mass measurement and LPT. Chinese Physics C, 2008, 32(S2): 197-200.
[11]	TUO Fei,HE Ming,SHEN Hong-Tao,WU Shao-Yong,HU Yue-Ming,BAO Yi-Wen,OUYANG Ying-Gen,YOU Qu-Bo,DOU Yu-Ling,JIANG Shan. Developments in accelerator mass spectrometry (AMS) method for¹⁸²Hf. Chinese Physics C, 2008, 32(S2): 201-204.
[12]	WANG Wei,LI Chao-Li,HE Ming,WU Shao-Yong,JIANG Shan. Measurements of⁷⁹Se with AMS based on extracting molecular negative ions. Chinese Physics C, 2008, 32(S2): 205-209.
[13]	YUAN Shuang-Gui,YANG Wei-Fan,XU Yan-Bing,HE Jian-Jun. Half-Life Measurement of Heavy Neutron-Rich Nuclide²³⁷Th. Chinese Physics C, 2000, 24(S1): 104-107.
[14]	Huang Wenxue,Xu Xiaoji,Hu Zhiqiang,Ma Ruichang. First Experimental Determination of Half-Life for New Nuclide⁶⁵Se. Chinese Physics C, 1996, 20(2): 113-118.
[15]	Huang Wenxue,Xu Xiaoji,Hu Zhiqiang,Ma Ruichang. First Experimental Determination of Half-Life for New Nuclide⁶⁵Se. Chinese Physics C, 1996, 20(S1): 15-21.
[16]	Wu Jimin,He Zhuoxiu. The Implications of the New Measurement of LeptonτMass. Chinese Physics C, 1993, 17(S2): 125-131.
[17]	ZHOU Zong-Yuan. HALF-LIFE MEASUREMENT OF THE β-DELAYED TWO-PROTON DECAY NUCLIDE²⁶P. Chinese Physics C, 1988, 12(2): 246-251.
[18]	FENG Xi-Zhang,ZHAO Zhen-Lan,GUO Ying-Huan,LUO Shi-Hua,YANG Rui-Ying,HUANG Zhong-Xiang,JIANG Yong. MEASUREMENT OF NUMBER OF RADIOACTIVE ATOMS AND HALF-LIFE (Ⅳ)—Applications and Accuracy ofN₀. Chinese Physics C, 1983, 7(1): 114-117.
[19]	FENG XI-ZHANG,ZHAO ZHEN-LAN,GUO YING-HUAN,LO SHI-HUA,XU YUAN-BIAO,YANG RUI-YING,HUANG ZHONG-XIANG,JIANG YONG. MEASUREMENTS OF NUMBER OF RADIOACTIVE ATOMS AND HALF-LIFE(Ⅲ). Chinese Physics C, 1982, 6(5): 642-647.
[20]	FENG XI-ZHANG,ZHAO ZHEN-LAN,LO SHI-HUA,ZHANG JING-LIE,GUO YING-HUAN,XU YUAN-BIAO,YANG RUI-YING,HUANG ZHONG-XIANG,ZHANG YUAN-JI,SU ZHI-XIN,LI ZUO-QIAN,MA GUO-HUI. MEASUREMENTS OF NUMBER OF RADIOACTIVE ATOMS AND HALF-LIFE (Ⅰ). Chinese Physics C, 1981, 5(6): 754-760.

Access

Get Citation

DOU Liang, JIANG Shan, WANG Xiao-Bo, DONG Ke-Jun, WU Shao-Yong, YANG Xu-Ran, WANG Xiao-Ming, LAN Xiao-Xi, XIA Qing-Liang and HE Ming. Measurement of the half-life of ⁷⁹Se with accelerator mass spectrometry[J]. Chinese Physics C, 2014, 38(10): 106204. doi: 10.1088/1674-1137/38/10/106204

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2013-10-09
Revised: 1900-01-01

Article Metric

Article Views(3735)
PDF Downloads(160)
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

Measurement of the half-life of⁷⁹Se with accelerator mass spectrometry

Corresponding author:HE Ming,

Received Date:2013-10-09

Accepted Date:1900-01-01

Available Online:2014-10-05

Abstract:The accelerator mass spectrometry (AMS) is an effective method for the determination of the half-life of long-lived radionuclides. In this paper, we report a method for measurement of the half-life of⁷⁹Se. The number of⁷⁹Se atoms was determined from measured⁷⁹Se/Se absolute ratios with the AMS system at the China Institute of Atomic Energy and the decay rate of⁷⁹Se was determined by counting the emitted β-rays with a liquid scintillation spectrometer. The major improvements of our measurements include using the high abundance of an⁷⁹Se sample which was cooled for many years to exclude the interference of short-lived nuclides, the extraction of SeO₂^-molecular ions, that results in a suppression of the⁷⁹Br background by as much as about five orders of magnitude. Also, an AMS measurement of the absolute ratio of⁷⁹Se/Se was developed to avoid systematic errors. The results show that⁷⁹Se/Se is (2.35±0.12)×10^-7in the reference sample and the radioactivity of⁷⁹Se is (1.24±0.05) Bq/g, so the half-life of⁷⁹Se is (2.78±0.18)×10⁵a.

HTML

Reference (1)

Measurement of the half-life of⁷⁹Se with accelerator mass spectrometry

Abstract：

References

Access

Article Metrics

Metrics

通讯作者:陈斌, bchen63@163.com

Email This Article