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Volume 34 Issue 3
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LI Wanqiong, LUO Xiaobing, SUN Qi, WANG Chao, XIA Chuandong, LI Ziyue. Quantification Study of 238U in Uranium Oxides[J]. Nuclear Physics Review, 2017, 34(3): 611-616. doi: 10.11804/NuclPhysRev.34.03.611
Citation: LI Wanqiong, LUO Xiaobing, SUN Qi, WANG Chao, XIA Chuandong, LI Ziyue. Quantification Study of 238U in Uranium Oxides[J]. Nuclear Physics Review, 2017, 34(3): 611-616. doi: 10.11804/NuclPhysRev.34.03.611
shu

Quantification Study of 238U in Uranium Oxides

doi: 10.11804/NuclPhysRev.34.03.611

  • Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China

Funds:  Fund of Key Laboratory of Neutron Physics, China Academy of Engineering Physics (2014BA06)
More Information
  • Corresponding author: 10.11804/NuclPhysRev.34.03.611
  • Received Date: 2016-12-18
  • Rev Recd Date: 2016-12-18
  • Publish Date: 2017-07-18
  • The accurate quantification of 238U in uranium oxides is of great importance for measurements of fission yield. The study for the method of 238U quantification has significance to lots of experiments involving absolute measurement of 238U. The reaction (n, γ) in the triuranium octoxide samples was induced by T(p,n)3He quasi-monoenergetic neutrons provided by the 2.5 MeV proton electrostatic accelerator in Sichuan University. The 277.6 keV characteristic γ ray of 239Np that comes from β-decay of the activation product 239U was detected by a HPGe detector. With the known (n, γ) cross section, the mass percentage of 238U in samples was determined to be 79.1%, with the uncertainty of 6.2%. ICP-MS was also used in the quantification of 238U in samples, its result was 59.2%. Meanwhile, the samples were analyzed by other several methods and the results showed that less than 2.2% H2O, no nitrogen, and no other impurity elements above Al were contained in the samples. EPBS was used to measure the atomic ratio of U and O and it was found that the mass percentage of 238U in samples was about 80%, verifying the result 79.1% of INAA.
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Quantification Study of 238U in Uranium Oxides

doi: 10.11804/NuclPhysRev.34.03.611
  • Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
Funds:  Fund of Key Laboratory of Neutron Physics, China Academy of Engineering Physics (2014BA06)
    Corresponding author: 10.11804/NuclPhysRev.34.03.611
  • Received Date: 2016-12-18
  • Rev Recd Date: 2016-12-18
  • Publish Date: 2017-07-18

Abstract: The accurate quantification of 238U in uranium oxides is of great importance for measurements of fission yield. The study for the method of 238U quantification has significance to lots of experiments involving absolute measurement of 238U. The reaction (n, γ) in the triuranium octoxide samples was induced by T(p,n)3He quasi-monoenergetic neutrons provided by the 2.5 MeV proton electrostatic accelerator in Sichuan University. The 277.6 keV characteristic γ ray of 239Np that comes from β-decay of the activation product 239U was detected by a HPGe detector. With the known (n, γ) cross section, the mass percentage of 238U in samples was determined to be 79.1%, with the uncertainty of 6.2%. ICP-MS was also used in the quantification of 238U in samples, its result was 59.2%. Meanwhile, the samples were analyzed by other several methods and the results showed that less than 2.2% H2O, no nitrogen, and no other impurity elements above Al were contained in the samples. EPBS was used to measure the atomic ratio of U and O and it was found that the mass percentage of 238U in samples was about 80%, verifying the result 79.1% of INAA.

LI Wanqiong, LUO Xiaobing, SUN Qi, WANG Chao, XIA Chuandong, LI Ziyue. Quantification Study of 238U in Uranium Oxides[J]. Nuclear Physics Review, 2017, 34(3): 611-616. doi: 10.11804/NuclPhysRev.34.03.611
Citation: LI Wanqiong, LUO Xiaobing, SUN Qi, WANG Chao, XIA Chuandong, LI Ziyue. Quantification Study of 238U in Uranium Oxides[J]. Nuclear Physics Review, 2017, 34(3): 611-616. doi: 10.11804/NuclPhysRev.34.03.611
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