Böttger, Ute and Pavlov, S.G. and Deßmann, N. and Hanke, Franziska and Weber, I. and Fritz, J. and Hübers, Heinz-Wilhelm (2016) Laser-induced alteration of Raman spectra for micron-sized solid particles. Planetary and Space Science, 138, pp. 25-32. Elsevier. doi: 10.1016/j.pss.2017.02.001. ISSN 0032-0633.
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Official URL: http://www.sciencedirect.com/science/article/pii/S0032063316301027
Abstract
The Raman Laser Spectrometer (RLS) instrument on board of the future ESAs ExoMars mission will analyze micron-sized powder samples in a low pressure atmosphere. Such micron-sized polycrystalline solid particles might be heated by the laser during the Raman measurements. Here, we report on the temperature-induced alteration of Raman spectra from micron-sized polycrystalline solid particles by comparing Raman spectra on silicon and the rock forming minerals olivine and pyroxene taken at different laser intensities and different ambient temperatures. Our analyses indicate that laser-induced heating results in both broadening and shifting of characteristic Raman lines in the Stokes and anti-Stokes spectral regions. For elementary crystalline silicon a significant local temperature increase and relevant changes in Raman spectra have been observed in particles with median sizes below 250 μm. In comparison, significantly weaker laser-induced Raman spectral changes were observed in more complex rockforming silicate minerals; even for lower grain sizes. Laser power densities realized in the RLS ExoMars instrument should cause only low local heating effects and, thus, negligible frequency shifts of the major Raman lines in common silicate minerals such as olivine and pyroxene.
Item URL in elib: | https://elib.dlr.de/107975/ | ||||||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||||||
Title: | Laser-induced alteration of Raman spectra for micron-sized solid particles | ||||||||||||||||||||||||
Authors: |
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Date: | 2016 | ||||||||||||||||||||||||
Journal or Publication Title: | Planetary and Space Science | ||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||||||||
Volume: | 138 | ||||||||||||||||||||||||
DOI: | 10.1016/j.pss.2017.02.001 | ||||||||||||||||||||||||
Page Range: | pp. 25-32 | ||||||||||||||||||||||||
Publisher: | Elsevier | ||||||||||||||||||||||||
ISSN: | 0032-0633 | ||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||
Keywords: | Raman spectroscopy; ExoMars mission; laser induced alteration; micron-sized solid particles | ||||||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||
HGF - Program: | Space | ||||||||||||||||||||||||
HGF - Program Themes: | Space Exploration | ||||||||||||||||||||||||
DLR - Research area: | Raumfahrt | ||||||||||||||||||||||||
DLR - Program: | R EW - Space Exploration | ||||||||||||||||||||||||
DLR - Research theme (Project): | R - Exploration of the Solar System | ||||||||||||||||||||||||
Location: | Berlin-Adlershof | ||||||||||||||||||||||||
Institutes and Institutions: | Institute of Optical Sensor Systems > Terahertz and Laser Spectroscopy | ||||||||||||||||||||||||
Deposited By: | Böttger, Dr.rer.nat. Ute | ||||||||||||||||||||||||
Deposited On: | 06 Feb 2017 10:24 | ||||||||||||||||||||||||
Last Modified: | 31 Jul 2019 20:05 |
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