摘要

　　γ射线谱仪是中国嫦娥一号卫星的载荷之一。科学目标是测量月表以下20厘米深度的土壤中氧、硅、铁、钛、铀、钍、钾的丰度。有可能测到镁、铝、钙的丰度。本文详细地介绍了γ射线谱仪的设计方案和性能指标，以及定标的情况。

Abstract

Gamma-ray spectrometer (GRS) is included in the payload complement of Chinese first lunar mission CE-1 that will be launched in 2007. Specific objectives of the GRS are to map abundances of O, Si, Fe, Ti, U, Th, K, and perhaps, Mg, Al, and Ca, to depths of about 20 cm. The design of GRS is described and its performance in the laboratory is presented. Also the GRS calibration is introduced in this paper.