Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2013, Vol. 24 ›› Issue (1): 010203 doi: 10.13538/j.1001-8042/nst.2013.01.009

• LOW ENERGY ACCELERATOR, RAY AND APPLICATIONS • Previous Articles     Next Articles

36Cl-AMS measurements with 3-MV tandem accelerator

WANG Huijuan,  GUAN Yongjing,  ZHANG Wei,  JIANG Shan,  Ming He   

  1. 1College of Physics Science and Technology, Guangxi University, Nanning 530004, China
    2China Institute of Atomic Energy, Beijing 102413, China
  • Supported by:

    Supported by National Natural Science Foundation of China (10805010, 41166002, 11025313);the special funding for national outstanding young scientist (Contract No. 2011-135);Guangxi Natural Science Foundation (Contract No. 2011GXNSFC018016, 2012GXNSFFA060005)

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WANG Huijuan, GUAN Yongjing, ZHANG Wei, JIANG Shan, Ming He. 36Cl-AMS measurements with 3-MV tandem accelerator.Nuclear Science and Techniques, 2013, 24(1): 010203     doi: 10.13538/j.1001-8042/nst.2013.01.009

Abstract:

36Cl is one of the most interesting nuclides in accelerator mass spectrometry (AMS) measurements. The application of 36Cl has been widely applied in various fields. All most all of 36Cl AMS measurements at natural isotopic concentrations have yet been performed at tandem accelerator with 5 MV or higher terminal voltage. The measure improvement of 36Cl and other medium heavy isotopes performed at 3 MV in AMS facilities is one of the hottest topics in AMS measurements. In order to increase the suppression factor of 36S, the energy loss straggling and angular straggling of 36Cl and 36S ions in various counter gases (P10, isobutane and propane) were investigated. Some groundwater samples were measured with energy of 32 MeV, and the results were in good agreement with the result obtained with ion energy of 72 MeV. The results indicate that the approximate detection limit of 36Cl in 3 MV AMS facility is 36Cl/Cl=1×10-14 , and the uncertainty is 30% when the sample with isotopic ration 36Cl/Cl≈10-13.

Key words: Accelerator mass spectrometry, Isobaric identification, 36Cl, Sensitivity