arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2603.28097astro-ph.EP
收藏

开发和表征新一代月球壤模拟物

Developing and characterizing a new-generation regolith simulant "IGCAS-AST01" for the Tianwen-2 target asteroid (469219) Kamo'oalewa

Center for Lunar and Planetary Sciences, Institute of Geochemistry, Chinese Academy of Sciences（中国科学院地球化学研究所月球与行星科学中心）；School of Earth Sciences, China University of Geosciences（中国地质大学地球科学学院）；Department of Earth, Environmental and Planetary Sciences, Brown University（布朗大学地球、环境与行星科学系）；Institute of Analysis and testing, Beijing Academy of Science and Technology, Beijing Center for Physical & Chemical Analysis（北京科学院测试技术研究所，北京物理化学分析中心）；Department of Geography, University of Winnipeg（温尼伯大学地理系）；State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology（澳门科技大学月球与行星科学国家重点实验室）；ESA ESRIN/PDO/NEO Coordination Centre（欧洲空间局ESRIN/PDO近地天体协调中心）；Deimos Italia；China Academy of Aerospace Science and Innovation（中国航天科技创新研究院）；Key Laboratory of Space Active Opto-Electronics Technology, Shanghai Institute of Technical Physics, Chinese Academy of Sciences（中国科学院上海技术物理研究所空间主动光电技术重点实验室）；National Astronomical Observatories, Chinese Academy of Sciences（中国科学院国家天文台）；Institute of Geology and Geophysics, Chinese Academy of Sciences（中国科学院地质与地球物理研究所）；China Academy of Space Technology（中国空间技术研究院）
Pengfei Zhang, Zichen Wei, Takahiro Hiroi, Jin Zhao, Edward Cloutis, Guozheng Zhang, Marco Fenucci, Rui Li, Xiaojing Zhang, Xiaoping Zhang, Zhiping He, Yan Su, … 展开作者

Pengfei Zhang, Zichen Wei, Takahiro Hiroi, Jin Zhao, Edward Cloutis, Guozheng Zhang, Marco Fenucci, Rui Li, Xiaojing Zhang, Xiaoping Zhang, Zhiping He, Yan Su, Yangting Lin, He Zhang, Yang Li

备注：
16 pages, 5 figures, under revision in Journal of Geophysical Research: Planets
阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

AI总结：

本文开发了Kamoʻoalewa月球壤模拟物IGCAS-AST01，通过高能脉冲激光照射LL5/6陨石粉末，研究其成分、粒径分布、密度、热性质及微观结构，以支持天问-2任务的样本采集与分析。

摘要：

中国计划从近地小行星(469219)卡莫ʻ奥莱瓦返回样本，这是我们先前识别出的LL陨石组分、高度空间风化物体，具有细粒月壤。在本研究中，我们通过高能脉冲激光照射LL5/6陨石粉末，开发了10mL的卡莫ʻ奥莱瓦月壤模拟物，命名为

英文摘要：

China plans to return samples from the near-Earth asteroid (469219) Kamo'oalewa, which we previously identified as an LL-chondrite-compositional, highly space-weathered object with fine-grained regolith. In this study, we developed 10 mL of Kamo'oalewa regolith simulant, designated "IGCAS-AST01", by irradiating LL5/6 chondrite (Kheneg Ljou^ad) powder with a high-energy pulsed laser. We then analyzed the composition, grain size distribution, density, porosity, visible to near-infrared reflectance spectrum, thermal emission spectrum, thermal diffusivity, specific heat capacity, and microstructural features of both the fresh (unirradiated) powder and IGCAS-AST01. IGCAS-AST01 is composed of 57.8 vol.% olivine, 19.9 vol.% orthopyroxene, 5.6 vol.% diopside, 12.2 vol.% plagioclase, 2.6 vol.% troilite, and minor amounts of other phases. It has a mean size of 26.99 um, a median size of 23.19 um, a density of 700 kg m^-3, and a porosity of 79.1%. Additionally, IGCAS-AST01 exhibits a low reflectance of 0.1 at 0.55 um and an extremely steep spectral slope. In the temperature range of 253.15-473.15 K, its thermal diffusivity and specific heat capacity range from 3.6-4.7 x 10^-6 m^2 s^-1 and 718.43-890.20 J kg^-1 K^-1, respectively. Furthermore, thick amorphous rims and abundant nanophase metallic iron particles are observed in olivine and pyroxene grains of IGCAS-AST01. These results could support the Tianwen-2 mission's payload calibration, sampling operations, on-orbit scientific data interpretation, and future sample analysis.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

↑