A Bragg curve detector and its application in AMS measurements for medium-weight nuclides

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LI Chao-Li, WANG Wei, HE Ming, WU Shao-Yong, Shen Hong-Tao, JIANG Shan and RUAN Xiang-Dong. A Bragg curve detector and its application in AMS measurements for medium-weight nuclides[J]. Chinese Physics C, 2008, 32(S2): 210-213.
LI Chao-Li, WANG Wei, HE Ming, WU Shao-Yong, Shen Hong-Tao, JIANG Shan and RUAN Xiang-Dong. A Bragg curve detector and its application in AMS measurements for medium-weight nuclides[J]. Chinese Physics C, 2008, 32(S2): 210-213. shu
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Received: 2008-07-17
Revised: 1900-01-01
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A Bragg curve detector and its application in AMS measurements for medium-weight nuclides

    Corresponding author: LI Chao-Li,

Abstract: The schematic layout and principle of a Bragg curve detector were showed in this paper. A Bragg curve detector was systemically modified and its performance was improved. The total energy resolution of the detector is 0.9% for alpha particle at energy of 5.48 MeV from 241Am source, and the Bragg Peak resolution is 1.6%. Measurement of medium-weight nuclides by using the Bragg curve detector were carried at CIAE-AMS system. series of 36Cl and 41Ca standard samples were measured. The results showed that this Bragg curve detector could clearly identify isobars 36Cl-36S and 41Ca-41K. The results also showed that the ΔZ/Z of 1/47, corresponding to Bragg Peak resolution is 2.1% at ion atomic number of about 16. The Bragg curve detector can be successfully used for AMS measurement.

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