[P-PS08] [JJ] 月の科学と探査

[PPS08-P13] Performance of the pyroelectric X-ray generator developed for active X-ray spectrometer on future lunar and planetary landing missions

*長岡 央¹、長谷部 信行^1,2、内藤 雅之²、溝根 美穂²、久野 治義¹ (1.早稲田大学理工学術院総合研究所、2.早稲田大学先進理工学研究科)

キーワード：蛍光X線分光、元素組成

Planetary landing missions to the Moon and Mars have been recently performed. In Japan, future lunar landing mission have been also planned. The landing missions investigate the geology at landing site in detail. One of powerful methods to determine the elemental composition of the planetary surface is X-ray fluorescence spectrometry. We have developed active X-ray spectrometer (AXS) in order to apply the AXS for future lunar landing mission as elemental analyzer. The AXS consists of pyroelectric X-ray generators (PXG), and a silicon drift detector (SDD). Laboratory experiments have been conducted to obtain enough X-ray intensity from PXG to measure the major and important elements as Mg, Al, Si, K, Ca, Ti and Fe in short observation interval. Furthermore, we have developed a prototype of PXG with a high intensity of X-ray. In this work, the development and performance of present PXG will be reported and discussed.