干旱区生态环境知识资源中心(Arid): Enabling new exploration opportunities on planetary surfaces: In situ geochemical characterization in soils by dielectric spectroscopy onboard the AXEL rover system

Arid

DOI	10.1016/j.pss.2020.104948
	Enabling new exploration opportunities on planetary surfaces: In situ geochemical characterization in soils by dielectric spectroscopy onboard the AXEL rover system
	Chin, Keith B.; Anderson, Robert C.; Schoelen, Dane A.; Kerber, Laura A.; McGarey, Patrick; Paton, Michael; Brown, Travis L.; Nesnas, Issa A.
通讯作者	Chin, KB
来源期刊	PLANETARY AND SPACE SCIENCE
ISSN	0032-0633
出版年	2020
卷号	187
英文摘要	In the work, we present dielectric spectroscopy (DS) is an analytical method capable of characterizing and quantifying electrochemically active materials (water/ice, ions, etc.) in planetary regoliths. Detection of these materials occurs when a small amount of energy is applied to an in situ sample, causing perturbation in the form of potential kinetic energy and inducing polarization and/or relaxation processes in materials of interest. The frequency dispersion on the electrical properties of impendences, relative permittivity, and conductivity spectra represents chemical and physical properties in association with inherent material properties. Therefore, measuring these energetic states can provide a unique fingerprint of the materials, depending on the frequencies that are scanned. In the case of water content in soils, the Debye equivalent circuit model can accurately predict its electrical properties and provide excellent quantification of the water content in soils. Use of DS is enabled by miniaturization of the key components and the low power requirements. DS is therefore capable of offering substantial scientific returns as an in situ sampling and non-destructive measurement technique, making it ideally suitable for deployment onboard many smaller space exploratory platforms. This work reports the first deployment use of DS from a field test for geochemical characterization of in situ soils, specifically on the quantification of water onboard the AXEL mobility system in the Mojave Desert. Laboratory testing has confirmed the sensitivity of DS with respect to particle size (fine vs coarse) determination as well as water content (down to 0.01 wt%) under a wide range of environmental conditions. Water content associated with bound and bulk water was uniquely identified in the soil mixture. We also describe a field demonstration using DS using two distinct insertion dielectric probes specifically design for sub-surface measurements, verifying their mechanical robustness and chemical stability. The field measurements are in good agreement with laboratory data and effectively quantified water content at about 3.0 wt% and 8.0 wt% for field test sites #1 and #2, respectively.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000539160200007
WOS关键词	IMPEDANCE SPECTROSCOPY ; ELECTRICAL-CONDUCTIVITY ; ICE ; ROCKS ; MODEL
WOS类目	Astronomy & Astrophysics
WOS研究方向	Astronomy & Astrophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324707
作者单位	[Chin, Keith B.; Anderson, Robert C.; Schoelen, Dane A.; Kerber, Laura A.; McGarey, Patrick; Paton, Michael; Brown, Travis L.; Nesnas, Issa A.] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA
推荐引用方式 GB/T 7714	Chin, Keith B.,Anderson, Robert C.,Schoelen, Dane A.,et al. Enabling new exploration opportunities on planetary surfaces: In situ geochemical characterization in soils by dielectric spectroscopy onboard the AXEL rover system[J],2020,187.
APA	Chin, Keith B..,Anderson, Robert C..,Schoelen, Dane A..,Kerber, Laura A..,McGarey, Patrick.,...&Nesnas, Issa A..(2020).Enabling new exploration opportunities on planetary surfaces: In situ geochemical characterization in soils by dielectric spectroscopy onboard the AXEL rover system.PLANETARY AND SPACE SCIENCE,187.
MLA	Chin, Keith B.,et al."Enabling new exploration opportunities on planetary surfaces: In situ geochemical characterization in soils by dielectric spectroscopy onboard the AXEL rover system".PLANETARY AND SPACE SCIENCE 187(2020).