Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102063
Title: Spectral modeling of meteorites at UV-vis-NIR wavelengths
Authors: Martikainen, J.
Penttilä, A.
Gritsevich, M.
Lindqvist, H.
Muinonen, K.
Issue Date: 2018
Publisher: Elsevier Ltd
Citation: Spectral modeling of meteorites at UV-vis-NIR wavelengths / J. Martikainen, A. Penttilä, M. Gritsevich, et al. — DOI 10.1016/j.jqsrt.2017.09.017 // Journal of Quantitative Spectroscopy and Radiative Transfer. — 2018. — Vol. 204. — P. 144-151.
Abstract: We present a novel simulation framework for assessing the spectral properties of meteorite specimens. The framework utilizes a ray-optics code, which simulates light scattering by Gaussian-random-sphere particles large compared to the wavelength of the incident light and accounts for internal diffuse scatterers. The code uses incoherent input and computes phase matrices by utilizing incoherent scattering matrices. Reflectance spectra are modeled by introducing a combination of olivine, pyroxene, and iron, the most common materials present in meteorites that dominate their spectral features. The complex refractive indices of olivine and iron are obtained from existing databases. The refractive indices of pyroxene are derived using an optimization that utilizes our ray-optics code and the measured spectrum of the material. We demonstrate our approach by applying it on the measured meteorite reflectance spectra obtained with the University of Helsinki integrating-sphere UV–vis-NIR spectrometer. © 2017 Elsevier Ltd
Keywords: ASTEROIDS
LIGHT SCATTERING
METEORITES
REFLECTANCE SPECTROSCOPY
SPECTRAL MODELING
ASTEROIDS
CODES (SYMBOLS)
INFRARED DEVICES
LIGHT
LIGHT SCATTERING
METEORITES
OLIVINE
REFLECTION
REFRACTIVE INDEX
SILICATE MINERALS
SPECTROMETERS
COMPLEX REFRACTIVE INDEX
INTEGRATING SPHERES
REFLECTANCE SPECTROSCOPY
REFLECTANCE SPECTRUM
SIMULATION FRAMEWORK
SPECTRAL MODELING
SPECTRAL PROPERTIES
UNIVERSITY OF HELSINKI
INCOHERENT SCATTERING
ASTEROID
LIGHT SCATTERING
METEORITE
MODELING
NEAR INFRARED
SPECTROSCOPY
ULTRAVIOLET RADIATION
WAVELENGTH
URI: http://hdl.handle.net/10995/102063
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85033588155
PURE ID: 6159464
12ff5d72-2002-4313-ad64-c00200915724
ISSN: 224073
DOI: 10.1016/j.jqsrt.2017.09.017
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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