Journal Article

Chang’E-7 Lunar Soil Water Molecule Analyzer (LSWMA) Prototype for High-Precision Measurement of Water Content and Hydrogen Isotope Ratio

Liu, Renrui, Wang, Xingping, Lu, Wenzhen, Chen, Rui, Xu, Yi, Yang, Qiquan, Cao, Nailiang, Kan, Ruifeng, Zhang, Chi, Li, Xiang, Xu, Zhenyu, Zhang, Ling, Chen, Kan

2024

Overview

Conclusions The developed Chang’E 7 LSWMA prototype demonstrates high precision in measuring water content and isotope values, which are the most important part of the measurement process, and the experimental results offer valuable guidance for in-situ measurement and data inversion. The LSWMA will perform the measurements after obtaining drilling (up to 1 m deep) or surface samples on the Moon. The estimated water content has also been affected by the processes of sampling, transportation and heating in addition to TDLAS. Therefore, the overall errors need to be analyzed and corrected. For isotopes measurement, the repetitions of experiments on the Moon’s PSR are limited due to power and temperature constraints. The memory effect error correction algorithm should be introduced to improve accuracy.

• Publisher: China University of Geosciences,Springer Nature B.V,Jianghuai Advance Technology Center,Hefei 230000,China%Anhui Institute of Optics and Fine Mechanics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China%The State Key Laboratory of Lunar and Planetary Science/Space Science Institute,Macau University of Science and Technology,Macau 999078,China%The State Key Laboratory of Lunar and Planetary Science/Space Science Institute,Macau University of Science and Technology,Macau 999078,China,School of Earth Science and Engineering,Sun Yat-Sen University,Guangzhou 510275,China,Anhui Institute of Optics and Fine Mechanics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China,College of Surveying & Geo-Informatics,Tongji University,Shanghai 200092,China%The State Key Laboratory of Lunar and Planetary Science/Space Science Institute,Macau University of Science and Technology,Macau 999078,China,The State Key Laboratory of Lunar and Planetary Science/Space Science Institute,Macau University of Science and Technology,Macau 999078,China%Anhui Institute of Optics and Fine Mechanics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China
• Subject: Accuracy / Biogeosciences / Drilling / Earth and Environmental Science / Earth science / Earth Sciences / Editorial / Error correction / Experiments / Geochemistry / Geology / Geotechnical Engineering & Applied Earth Sciences / Hydrogen / Hydrogen isotopes / In situ measurement / Isotopes / Lunar soil / Lunar surface / Moisture content / Moon / Prototypes / Soil analysis / Soil water / Valves / Water / Water chemistry / Water content