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Article Navigation >  Nuclear Physics Review  > 2015  >  32(4): 453-459

LI Xiaoli, GE Liangquan, YANG Jia, XIONG Shengqing. Distribution of the Thorium Counting Rate on the Lunar Surface from CE2-GRS Based on Cluster NASVD[J]. Nuclear Physics Review, 2015, 32(4): 453-459. doi: 10.11804/NuclPhysRev.32.04.453
Citation: LI Xiaoli, GE Liangquan, YANG Jia, XIONG Shengqing. Distribution of the Thorium Counting Rate on the Lunar Surface from CE2-GRS Based on Cluster NASVD[J]. Nuclear Physics Review, 2015, 32(4): 453-459. doi: 10.11804/NuclPhysRev.32.04.453
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Distribution of the Thorium Counting Rate on the Lunar Surface from CE2-GRS Based on Cluster NASVD

doi: 10.11804/NuclPhysRev.32.04.453
  • 1.

    College of Nuclear Technology and Automation Engineering, Chengdu University of Technology,

  • 2.

    Chengdu 610059, China;

  • Received Date: 2015-01-21
  • Accepted Date: 2015-12-20
  • Publish Date: 2015-12-20
  • The distribution of thorium on the lunar surface provides the important evidence for lunar evolution history. It is difficult to obtain the distribution of thorium on the lunar surface from CE2-GRS because of noise in the spectrum. The method for smoothing the spectrum is proposed which is based on cluster NASVD. The counting rate map of thorium on the lunar surface is achieved from CE2-GRS. Counting rate map of thorium gamma-rays shows a surface thorium distribution that is in general agreement with other measurement from LP-GRS and SLENE GRS which have better accuracy. It is more effectively to reduce the noise and get the weak information of characteristic peak used the method of cluster NASVD than other traditional methods for smoothing gamma-ray spectrum.
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  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Distribution of the Thorium Counting Rate on the Lunar Surface from CE2-GRS Based on Cluster NASVD

doi: 10.11804/NuclPhysRev.32.04.453
  • 1. College of Nuclear Technology and Automation Engineering, Chengdu University of Technology,
  • 2. Chengdu 610059, China;
  • Received Date: 2015-01-21
  • Accepted Date: 2015-12-20
  • Publish Date: 2015-12-20

Abstract: The distribution of thorium on the lunar surface provides the important evidence for lunar evolution history. It is difficult to obtain the distribution of thorium on the lunar surface from CE2-GRS because of noise in the spectrum. The method for smoothing the spectrum is proposed which is based on cluster NASVD. The counting rate map of thorium on the lunar surface is achieved from CE2-GRS. Counting rate map of thorium gamma-rays shows a surface thorium distribution that is in general agreement with other measurement from LP-GRS and SLENE GRS which have better accuracy. It is more effectively to reduce the noise and get the weak information of characteristic peak used the method of cluster NASVD than other traditional methods for smoothing gamma-ray spectrum.

LI Xiaoli, GE Liangquan, YANG Jia, XIONG Shengqing. Distribution of the Thorium Counting Rate on the Lunar Surface from CE2-GRS Based on Cluster NASVD[J]. Nuclear Physics Review, 2015, 32(4): 453-459. doi: 10.11804/NuclPhysRev.32.04.453
Citation: LI Xiaoli, GE Liangquan, YANG Jia, XIONG Shengqing. Distribution of the Thorium Counting Rate on the Lunar Surface from CE2-GRS Based on Cluster NASVD[J]. Nuclear Physics Review, 2015, 32(4): 453-459. doi: 10.11804/NuclPhysRev.32.04.453
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