Ground-based verification and data processing of Yutu rover Active Particle-induced X-ray Spectrometer
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摘要
The Active Particle-induced X-ray Spectrometer(APXS) is one of the payloads on board the Yutu rover of the Chang'E-3 mission. In order to assess the instrumental performance of APXS, a ground verification test was performed for two unknown samples(basaltic rock, mixed powder sample). In this paper, the details of the experiment configurations and data analysis method are presented. The results show that the elemental abundance of major elements can be well determined by the APXS with relative deviations <15 wt.%(detection distance=30 mm,acquisition time=30 min). The derived detection limit of each major element is inversely proportional to acquisition time and directly proportional to detection distance, suggesting that the appropriate distance should be <50 mm.
The Active Particle-induced X-ray Spectrometer(APXS) is one of the payloads on board the Yutu rover of the Chang'E-3 mission. In order to assess the instrumental performance of APXS, a ground verification test was performed for two unknown samples(basaltic rock, mixed powder sample). In this paper, the details of the experiment configurations and data analysis method are presented. The results show that the elemental abundance of major elements can be well determined by the APXS with relative deviations <15 wt.%(detection distance=30 mm,acquisition time=30 min). The derived detection limit of each major element is inversely proportional to acquisition time and directly proportional to detection distance, suggesting that the appropriate distance should be <50 mm.
The Active Particle-induced X-ray Spectrometer(APXS) is one of the payloads on board the Yutu rover of the Chang'E-3 mission. In order to assess the instrumental performance of APXS, a ground verification test was performed for two unknown samples(basaltic rock, mixed powder sample). In this paper, the details of the experiment configurations and data analysis method are presented. The results show that the elemental abundance of major elements can be well determined by the APXS with relative deviations <15 wt.%(detection distance=30 mm,acquisition time=30 min). The derived detection limit of each major element is inversely proportional to acquisition time and directly proportional to detection distance, suggesting that the appropriate distance should be <50 mm.
引文
1 PENG W X,WANG H Y,CUI X Z et al.Active Particleinduced X-ray Spectrometer for CHANG’E-3 Yu Tu Rover mission and Its First Results.45th Lunar and Planetary Science Conference.2014
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9 Campbell J L,Wang J X.X-Ray Spectrometry 1991,20(4):191 –197
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12 Heiken G H,Vaniman D T,French B M.Lunar Soucebook.Cambridge:Cambridge University Press,1991.346
2 Toulmin P Baird A K,Clark B C et al.Icarus,1973,20:153–178
3 Talboys D L,Potts P J,Fraser G W et al.X-ray Spectrometry,2009,38(5):417–428
4 Van Grieken R E,Markowicz A A.Handbook of X-Ray Spectrometry.Second Edition.New York:Marcel Dekker,2002.274 –278
5 Ryan C G,Clayton E,Griffin W L et al.Nucl.Instrum.Meth-ods 1988,34:396
6 Morh′aˇc M.Nucl.Instrum.Methods,2009,600:478–487
7 Phillips G W,Marlow K W.Nucl.Instrum.Methods,1976,137 (3):525–536
8 WU M Y.The Study on Data Processing Method of Chang’E-3 Alpha Particle X-ray Spectrometer(Ph.D.Thesis).Beijing:IHEP,CAS,2012(in Chinese)
9 Campbell J L,Wang J X.X-Ray Spectrometry 1991,20(4):191 –197
10 JI A,TAO G Y,ZHUO S J et al.X-ray Spectral Analysis.Beijing:Science Press,2003.115–119(in Chinese)
11 Rousseau R M.The Rigaku Journal,2001,18(2):33–47
12 Heiken G H,Vaniman D T,French B M.Lunar Soucebook.Cambridge:Cambridge University Press,1991.346