Experimental investigation of structural OH/H2O in different lunar minerals and glass via solar-wind proton implantation

被引：11
|
作者：
Tang, Hong [1 ,2 ,3 ]
Li, Xiongyao [1 ,2 ,3 ]
Zeng, Xiaojia [1 ]
Li, Yang [1 ,2 ,3 ]
Yu, Wen [1 ,2 ,3 ]
Mo, Bing [1 ,2 ,3 ]
Liu, Jianzhong [1 ,2 ,3 ]
Wang, Shijie [4 ]
Zou, Yongliao [5 ]
机构：
[1] Chinese Acad Sci, Ctr Lunar & Planetary Sci, Inst Geochem, Guiyang 550081, Peoples R China
[2] CAS Ctr Excellence Comparat Planetol, Beijing, Peoples R China
[3] Chinese Acad Sci, Key Lab Space Mfg Technol, Beijing 100094, Peoples R China
[4] Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Peoples R China
[5] Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China
来源：
ICARUS | 2021年 / 359卷
基金：
中国国家自然科学基金;
关键词：
Lunar water; Infrared spectra; Solar wind; H(+)implantation;
D O I：
10.1016/j.icarus.2021.114322
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The possibility of OH/H2O formation on the lunar surface has been proposed because of the interaction between protons from the solar wind and oxygen in the regolith. In this study, we examined olivine, pyroxene, plagioclase, and volcanic glass samples together irradiated with 7 keV H+ at a dose of 10(17) ions/cm(2) under the same experimental conditions to simulate the solar-wind proton implantation process on the Moon. By comparing the infrared spectral characteristics of these samples before and after H+ implantation through an infrared spectrometer, we confirm that OH forms in all minerals and glass after H+ implantation, with a remarkable amount of OH/H2O found in plagioclase. This indicates that plagioclase can capture more H+ than other silicate phases to form the OH/H2O. The absorption characteristics of OH/H2O formed by H+ implantation are distinct and associated with the mineral structure. The efficiency of OH/H2O formation by H+ implantation is affected by crystal structure. We conclude that OH/H2O formed by solar-wind implantation in the lunar soil is likely to be mainly preserved in plagioclase, and the estimated OH/H2O absorption strength from 0.7 to 3.6% at 3356 cm(-1) and from 0.9 to 4.8% at 3622 cm(-1) of plagioclase is consistent with those found by recent lunar spacecraft missions.
引用
收藏
页数：6
相关论文
共 31 条
  • [31] The local state of hydrogen atoms and proton transfer in the crystal structure of natural berborite, Be2(BO3)(OH)•H2O: Low-temperature single crystal X-ray analysis, IR and 1H NMR spectroscopy, and crystal chemistry and structural complexity of beryllium borates
    Aksenov, Sergey M.
    V. Chukanov, Nikita
    Tarasov, Viktor P.
    Banaru, Daria A.
    Mackley, Stephanie A.
    Banaru, Alexander M.
    V. Krivovichev, Sergey
    Burns, Peter C.
    JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2024, 189
1234