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  • Melikechi, N.Optical Science Center for Applied Research, Delaware State University, Dover (author)

Correcting for variable laser-target distances of laser-induced breakdown spectroscopy measurements with ChemCam using emission lines of Martian dust spectra

  • Article/chapterEnglish2014

Publisher, publication year, extent ...

  • Elsevier BV,2014
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:ltu-7824
  • https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-7824URI
  • https://doi.org/10.1016/j.sab.2014.04.004DOI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Upprättat; 2014; 20150814 (ninhul)
  • As part of the Mars Science Laboratory, the ChemCam instrument acquires remote laser induced breakdown spectra at distances that vary between 1.56 m and 7 m. This variation in distance affects the intensities of the measured LIBS emission lines in non-trivial ways. To determine the behavior of a LIBS emission line with distance, it is necessary to separate the effects of many parameters such as laser energy, laser spot size, target homogeneity, and optical collection efficiency. These parameters may be controlled in a laboratory on Earth but for field applications or in space this is a challenge. In this paper, we show that carefully selected ChemCam LIBS emission lines acquired from the Martian dust can be used to build an internal proxy spectroscopic standard. This in turn, allows for a direct measurement of the effects of the distance of various LIBS emission lines and hence can be used to correct ChemCam LIBS spectra for distance variations. When tested on pre-launch LIBS calibration data acquired under Martian-like conditions and with controlled and well-calibrated targets, this approach yields much improved agreement between targets observed at various distances. This work lays the foundation for future implementation of automated routines to correct ChemCam spectra for differences caused by variable distance.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Mezzacappa, A.Optical Science Center for Applied Research, Delaware State University, Dover (author)
  • Cousin, A.Los Alamos National Laboratory (author)
  • Lanza, N.L.Los Alamos National Laboratory (author)
  • Lasue, J.Institut de Recherche en Astophysique et Planetologie (IRAP), Universite' Paul Sabatier, Toulouse (author)
  • Clegg, S.M.Los Alamos National Laboratory (author)
  • Berger, G.Institut de Recherche en Astophysique et Planetologie (IRAP), Universite' Paul Sabatier, Toulouse (author)
  • Wiens, R.C.Los Alamos National Laboratory (author)
  • Maurice, S.Institut de Recherche en Astophysique et Planetologie (IRAP), Universite' Paul Sabatier, Toulouse (author)
  • Tokar, R.L.Planetary Science Institute, Flagstaff, Arizona (author)
  • Bender, S.Planetary Science Institute, Tucson (author)
  • Forni, O.Institut de Recherche en Astophysique et Planetologie (IRAP), Universite' Paul Sabatier, Toulouse (author)
  • Breves, E.A.Department of Astronomy, Mt. Holyoke College, South Hadley (author)
  • Dyar, M.D.Department of Astronomy, Mt. Holyoke College, South Hadley (author)
  • Frydenvang, J.Niels Bohr Institute, University of Copenhagen (author)
  • Delapp, D.Los Alamos National Laboratory (author)
  • Gasnault, O.Institut de Recherche en Astophysique et Planetologie (IRAP), Universite' Paul Sabatier, Toulouse (author)
  • Newsom, H.Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque (author)
  • Ollila, A.M.Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque (author)
  • Lewin, E.Institut des Sciences de la Terre, Universite Grenoble l-CNRS, Grenoble (author)
  • Clark, B.C.Space Science Institute (author)
  • Ehlmann, B.L.California Institute of Technology, Pasadena (author)
  • Blaney, D.Jet Propulsion Laboratory, California Institute of Technology, Pasadena (author)
  • Fabre, C.CNRS, Georessources, Vandoeuvre les Nancy (author)
  • Martin-Torres, JavierCentro de Astrobiologia, Madrid,The MSL Science Team(Swepub:ltu)javmar(author)
  • Optical Science Center for Applied Research, Delaware State University, DoverLos Alamos National Laboratory (creator_code:org_t)

Related titles

  • In:Spectrochimica Acta Part B - Atomic Spectroscopy: Elsevier BV96, s. 51-600584-85471873-3565

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