中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Formation and growth of nanophase iron particles on the surface of Mercury revealed by experimental study

文献类型:期刊论文

作者Ronghua Pang; Yang Li; Chen Li; Pengfei Zhang; Zhuang Guo; Sizhe Zhao; Han Yu; Li Wang; Chenxi Zhu; Shuangyu Wang
刊名Acta Geochimica
出版日期2024
卷号43期号:4页码:774-784
DOI10.1007/s11631-024-00699-x
英文摘要

Space weathering is a primary factor in altering the composition and spectral characteristics of surface materials on airless planets. However, current research on space weathering focuses mainly on the Moon and certain types of asteroids. In particular, the impacts of meteoroids and micrometeoroids, radiation from solar wind/solar flares/cosmic rays, and thermal fatigue due to temperature variations are being studied. Space weathering produces various transformation products such as melted glass, amorphous layers, iron particles, vesicles, and solar wind water. These in turn lead to soil maturation, changes in visible and near-infrared reflectance spectra (weakening of characteristic absorption peaks, decreased reflectance, increased near-infrared slope), and alterations in magnetism (related to small iron particles), collectively termed the “lunar model” of space weathering transformation. Compared to the Moon and asteroids, Mercury has unique spatial environmental characteristics, including more intense meteoroid impacts and solar thermal radiation, as well as a weaker particle radiation environment due to the global distribution of its magnetic field. Therefore, the lunar model of space weathering may not apply to Mercury. Previous studies have extensively explored the effects of micrometeoroid impacts. Hence, this work focuses on the effects of solar-wind particle radiation in global magnetic-field distribution and on the weathering transformation of surface materials on Mercury under prolonged intense solar irradiation. Through the utilization of high-valence state, heavy ion implantation, and vacuum heating simulation experiments, this paper primarily investigates the weathering transformation characteristics of the major mineral components such as anorthite, pyroxene, and olivine on Mercury's surface and compares them to the weathering transformation model of the Moon. The experimental results indicate that ion implantation at room temperature is insufficient to generate np-Fe0 directly but can facilitate its formation, while prolonged exposure to solar thermal radiation on Mercury's surface can lead directly to the formation of np-Fe0. Therefore, intense solar thermal radiation is a crucial component of the unique space weathering transformation process on Mercury's surface.

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语种英语
源URL[http://ir.gyig.ac.cn/handle/42920512-1/15687]  
专题地球化学研究所_月球与行星科学研究中心
天体地球化学研究组
作者单位1.Center for Lunar and Planetary Sciences, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China
2.University of Chinese Academy of Sciences, Beijing, China
3.Center for Excellence in Comparative Planetology, Chinese Academy of Sciences, Hefei, China
4.Institute of Remote Sensing and Geographical Information System, School of Earth and Space Sciences, Peking University, Beijing, China
5.State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macau, China
6.Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, China
7.State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China
8.Laboratory for Space Environment and Physical Sciences, Harbin Institute of Technology, Harbin, China
9.Research Center for Planetary Science, College of Earth Science, Chengdu University of Technology, Chengdu, China
10.Key Laboratory of Planetary Sciences, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, China
推荐引用方式
GB/T 7714
Ronghua Pang,Yang Li,Chen Li,et al. Formation and growth of nanophase iron particles on the surface of Mercury revealed by experimental study[J]. Acta Geochimica,2024,43(4):774-784.
APA Ronghua Pang.,Yang Li.,Chen Li.,Pengfei Zhang.,Zhuang Guo.,...&Rui Li.(2024).Formation and growth of nanophase iron particles on the surface of Mercury revealed by experimental study.Acta Geochimica,43(4),774-784.
MLA Ronghua Pang,et al."Formation and growth of nanophase iron particles on the surface of Mercury revealed by experimental study".Acta Geochimica 43.4(2024):774-784.

入库方式: OAI收割

来源:地球化学研究所

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