Standard Sample Method for improvement of Elemental Analysis and Its Application to XRS onboard SELENE

Abstract

XRS ( X-Ray fluorescence Spectrometer ) which will be installed on SELENE , will observe x-ray fluorescence emitted from the lunar surface and quantify the major elemental composition of the lunar surface. Determination accuracy for major elemental composition of the lunar surface can be enhanced by comparing spectrum from the lunar surface with one from the standard sample. In this study , we attemped to evaluate the accuracy of elemental composition ratio acquired by this method.