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 ›› 2017, Vol. 28 ›› Issue (7): 98 doi: 10.1007/s41365-017-0252-5

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

The AMS measurement of 236U at CIRCE

Yong-Jing Guan1,  Hui-Juan Wang1, Mario De Cesare2,3, Filippo Terrasi4   

  1. 1 Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science & Technology, Guangxi University, Nanning 530004, China
    2 Department of Diagnostic Methodologies and Measurement Techniques, Italian Aerospace Research Centre (CIRA), 81043 Capua (CE), Italy
    3 INFN, 80126 Naples, Italy
    4 CIRCE, Department of Mathematic and Physics, II University of Naples, 81100 Caserta, Italy
  • Supported by:

    Supported by the National Science Foundation of China (Nos. 41166002 and 11665006), and partly supported by the Guangxi Natural Science Foundation (No. 2012GXNSFFA060005) and Provincial Key laboratory Project.

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Yong-Jing Guan, Hui-Juan Wang, Mario De Cesare, Filippo Terrasi. The AMS measurement of 236U at CIRCE.Nuclear Science and Techniques, 2017, 28(7): 98     doi: 10.1007/s41365-017-0252-5
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Abstract:

Accelerator mass spectrometry (AMS) is an ultrasensitive technique for measuring long-lived actinides, e.g., 236U, 237Np and 239Pu isotopes. In order to improve the detection limit for actinides abundance, and to increase the detection efficiency in actinides AMS measurement, a 16-strip silicon detector was used to identify actinides at the Center for Isotopic Research on Cultural and Environmental heritage in Caserta, Italy. The sensitivity of 236U/238U was 1×10-11 by special resolution and 5.0×10-12 by time resolution. The pulse height defect of 236U in an ion-implanted silicon detector in the low-energy range with 17.26 MeV is presented.

Key words: Uranium, Accelerator mass spectrometry, Sensitivity, Pulse height defect