Mr. Dan Zhang Profile

Dan Zhang

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Proceedings Article | 18 November 2014 Paper

Laser spectrum detection methods for substance of Mars surface

Dan Zhang, Bin Xue, Yi-yi Zhao

Proceedings Volume 9298, 92980F (2014) https://doi.org/10.1117/12.2070682

KEYWORDS: Mars, Laser induced breakdown spectroscopy, Remote sensing, Minerals, Raman spectroscopy, Spectroscopy, Chemical elements, Infrared spectroscopy, Mid-IR, Databases

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The chemical element and mineral rock's abundance and distribution are the basic material of planetary geology evolution research^[1], hence preterit detection for composition of Mars surface substance contains both elements sorts and mineral ingredients. This article introduced new ways to detect Mars elements and mineral components, Laser Induced Breakdown Spectroscopy (LIBS) and Raman Spectroscopy (RS) which have distinct advantages, such as work over a long distance, detect rapidly, accuratly and nondestructively. LIBS and RS both use laser excitation to shoot the substance of Mars exciting new wavelengths. The techniques of LIBS and RS in laboratory are mature, besides the technique of LIBS is being used in MSL (Chemcam) now and RS will be used in ExoMars. Comparing LIBS and RS's detection results with XRF and APXS, Mossbauer spectrometer, these existed Mars surface material detection instruments,and the Infrared spectrometer, Mid-IR, they have more accurate detection results. So LIBS and RS are competent for Mars surface substance detection instead of X-ray spectrometer and Mossbauer spectrometer which were already used in 'Viking 1' and 'Opportunity'. Only accurate detection results about Mars surface substance can lead to scientist's right analysis in inversing geological evolution of the planet.

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