Japan Geoscience Union Meeting 2018

Presentation information

[EJ] Evening Poster

P (Space and Planetary Sciences) » P-PS Planetary Sciences

[P-PS05] Lunar science and exploration

Wed. May 23, 2018 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

convener:Hiroshi Nagaoka(Waseda Univ.), Tomokatsu Morota(Graduate School of Environmental Studies, Nagoya University), Masaki N (名古屋大学宇宙地球環境研究所, 共同), Masahiro KAYAMA(Department of Earth and Planetary Material Sciences, Faculty of Science, Tohoku University)

[PPS05-P16] Basic Studies for Development of Active X-ray Generators Used in X-ray Fluorescence Spectrometer on Future Lunar Landing Missions.

*Hiroshi Nagaoka1, Naomichi Tanaka2, Shintaro Kiga2, Masayuki Naito2, Nobuyuki Hasebe1,2, Haruyoshi Kuno1 (1.Res. Inst., Waseda Univ., 2.School Adv. Sci. Engineering, Waseda Univ. )

Keywords:Lunar exploration, XRF, Development

Development of Active X-ray Generator (AXG) has performed in order to mount Active X-ray Spectrometer (AXS) for future lunar landing mission. AXS consisting of X-ray generator and silicon drift detector, is an elemental analyzer to determine the chemical composition on site by X-ray Fluorescence Spectroscopy. We have developed two types of AXG without radioisotopes, the first is a pyroelectric X-ray generator (PXG), and the second is a carbon-nanotube X-ray generator (CXG). Basic studies to increase X-ray intensities by changing the inner conditions of PXG (target shape, crystal size, inner gas pressure, etc.) have been performed. Furthermore, X-ray intensity of the improved PXG is compared with that of CXG. In this presentation, the current status of development of PXG and CXG will be reported and discussed.