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

LI Chao-Li; WANG Wei; HE Ming; WU Shao-Yong; Shen Hong-Tao; JIANG Shan; RUAN Xiang-Dong

Chinese Physics C> 2008, Vol. 32> Issue(S2) : 210-213

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

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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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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.

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

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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

Corresponding author: LI Chao-Li,

Received Date: 2008-07-17

Accepted Date: 1900-01-01

Available Online: 2008-01-03

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

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