Primary result of <SUP>236</SUP>U measurement with accelerator mass spectrometry at CIAE

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

doi:10.1088/1674-1137/34/2/007

Chinese Physics C> 2010, Vol. 34> Issue(2) : 192-197 DOI: 10.1088/1674-1137/34/2/007

Primary result of ²³⁶U measurement with accelerator mass spectrometry at CIAE

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Abstract：
The rare isotope ²³⁶U has a half-life of 2.342(3)×10⁷ years, and is produced principally by thermal neutron capture on ²³⁵U. The isotopic atom ratio of ²³⁶U/²³⁸U depends on the integral thermal neutron flux received by the material of interest. ²³⁶U is potentially useful as a ``fingerprint'' for indicating the presence of neutron-irradiated uranium usually originating from nuclear activity. By extracting negative molecular ion UO^－ from the uranium oxide target, simulating the ²³⁶U¹⁶O^－ beam transport with ²³⁸U¹⁶O^－ and ²⁰⁸Pb₂¹⁶O^－ pilot molecular ion beam, transporting the ²³⁶U-containing ion beam with a high resolution injection magnet analyzer and electrostatic analyzer system, and finally identifying and detecting ²³⁶U with a time-of-flight detector (TOF), a method for AMS (Accelerator Mass Spectrometry) measurement of ²³⁶U was established on the HI-13 Accelerator AMS system at China Institute of Atomic Energy.

References

[1]

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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 and JIANG Shan. Primary result of ²³⁶U measurement with accelerator mass spectrometry at CIAE[J]. Chinese Physics C, 2010, 34(2): 192-197. doi: 10.1088/1674-1137/34/2/007

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Received: 2009-03-03
Revised: 2009-04-29

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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

Primary result of ²³⁶U measurement with accelerator mass spectrometry at CIAE

Corresponding author: JIANG Shan,

Received Date: 2009-03-03

Accepted Date: 2009-04-29

Available Online: 2010-02-05

Abstract:

The rare isotope ²³⁶U has a half-life of 2.342(3)×10⁷ years, and is produced principally by thermal neutron capture on ²³⁵U. The isotopic atom ratio of ²³⁶U/²³⁸U depends on the integral thermal neutron flux received by the material of interest. ²³⁶U is potentially useful as a ``fingerprint'' for indicating the presence of neutron-irradiated uranium usually originating from nuclear activity. By extracting negative molecular ion UO^－ from the uranium oxide target, simulating the ²³⁶U¹⁶O^－ beam transport with ²³⁸U¹⁶O^－ and ²⁰⁸Pb₂¹⁶O^－ pilot molecular ion beam, transporting the ²³⁶U-containing ion beam with a high resolution injection magnet analyzer and electrostatic analyzer system, and finally identifying and detecting ²³⁶U with a time-of-flight detector (TOF), a method for AMS (Accelerator Mass Spectrometry) measurement of ²³⁶U was established on the HI-13 Accelerator AMS system at China Institute of Atomic Energy.

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Primary result of 236U measurement with accelerator mass spectrometry at CIAE

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Primary result of ²³⁶U measurement with accelerator mass spectrometry at CIAE

Primary result of ²³⁶U measurement with accelerator mass spectrometry at CIAE