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Gamma Ray Spectrometer

NSSDCA ID: 2007-051A-06

Mission Name: Chang'e 1


The Gamma Ray Spectrometer is part of the X-Ray/Gamma Ray Spectrometer system. It is designed to measure gamma rays from two sources: those emitted by surface elements which have been irradiated by cosmic rays, and those emanating from naturally radioactive elements such as K, Th, and U. The results will be used to constrain the surface elemental composition. The instrument consists of a main scintillator, anti-coincidence scintillator, photomultiplier tube, signal amplifier, and data acquisition system. It covers an energy range from 300 keV to 9 MeV and has an energy resolution of 9% at 662 keV.

Alternate Names

  • Chang'e1/GammaRaySpectrometer

Funding Agency

  • China National Space Administration (Peoples Republic of China)


  • Planetary Science: Geology and Geophysics

Additional Information

Questions and comments about this experiment can be directed to: Dr. David R. Williams



NameRoleOriginal AffiliationE-mail
Dr. Sun HuixangGeneral Contact
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