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Research Papers: Nuclear Power

Gamma-Ray Spectrum Analysis of Chang’E-1 for Lunar Detection

[+] Author and Article Information
Xu HongKun

Key Laboratory of Nuclear Resources and Environment (East China Institute of Technology), Ministry of Education, Nanchang, JiangXi, China, 330013; Sichuan Provincial Key Laboratory for Applied Nuclear Technology in Geology, Chengdu University of Technology, Chengdu, Sichuan, China 610059

Fang Fang, Ni Shijun

Sichuan Provincial Key Laboratory for Applied Nuclear Technology in Geology, Chengdu University of Technology, Chengdu, Sichuan, China 610106

He Jianfeng

Key Laboratory of Nuclear Resources and Environment (East China Institute of Technology), Ministry of Education, Nanchang, JiangXi, China

You Lei

 Chengdu University of Technology, Chengdu, Sichuan, China

J. Eng. Gas Turbines Power 133(5), 052912 (Dec 16, 2010) (4 pages) doi:10.1115/1.4002846 History: Received July 04, 2010; Revised July 25, 2010; Published December 16, 2010; Online December 16, 2010

Gamma-ray spectrum analysis was essential for radioactive environmental monitoring, and it had been widely used in many areas of nuclear engineering. However, for the low-energy region of gamma-ray spectrum, weak peaks were contained in the fast-decreasing background, so it was difficult to extract characteristic information from original spectra. In order to get a better analytic result based on wavelet methods in frequency domain, we had processed the gamma-ray spectrometer data of Chang’E-1 and well extracted some useful information of spectral characteristic peaks. Then, we preliminarily mapped the distribution of net peak counts for potassium on lunar surface, which indirectly reflected the distribution of elemental abundance. At last, we compared our analytic result with that of Apollo and Lunar Prospector and found some consistencies and differences.

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Figures

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Figure 1

Spectrum pre-analysis

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Figure 2

Revised spectral peak (left) and result by ROOT’s function calling (right)

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Figure 3

Relative count distribution of K on lunar

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Figure 4

Composition and relationship of spectrum

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