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The Mars Science Laboratory APXS calibration target: Comparison of Martian measurements with the terrestrial calibration

Campbell, John; King, Penelope; Burkemper, Laura K; Berger, Jeffrey; Gellert, Ralph; Boyd, Nicholas; Perrett, Glynis; Pradler, I; Thompson, Lucy; Edgett, Kenneth; Yingst, R.A.

Description

The Mars Science Laboratory Curiosity rover carries a basalt calibration target for monitoring the performance of the alpha particle X-ray spectrometer. The spectrum acquired on Sol 34 shows increased contributions from Mg, S, Cl and Fe relative to laboratory spectra recorded before launch. Mars Hand Lens Imager images confirm changes in the appearance of the surface. Spectra taken on Sols 179 and 411 indicate some loss of the deposited material. The observations suggest deposition of a surface...[Show more]

dc.contributor.authorCampbell, John
dc.contributor.authorKing, Penelope
dc.contributor.authorBurkemper, Laura K
dc.contributor.authorBerger, Jeffrey
dc.contributor.authorGellert, Ralph
dc.contributor.authorBoyd, Nicholas
dc.contributor.authorPerrett, Glynis
dc.contributor.authorPradler, I
dc.contributor.authorThompson, Lucy
dc.contributor.authorEdgett, Kenneth
dc.contributor.authorYingst, R.A.
dc.date.accessioned2015-12-10T23:31:20Z
dc.identifier.issn0168-583X
dc.identifier.urihttp://hdl.handle.net/1885/68575
dc.description.abstractThe Mars Science Laboratory Curiosity rover carries a basalt calibration target for monitoring the performance of the alpha particle X-ray spectrometer. The spectrum acquired on Sol 34 shows increased contributions from Mg, S, Cl and Fe relative to laboratory spectra recorded before launch. Mars Hand Lens Imager images confirm changes in the appearance of the surface. Spectra taken on Sols 179 and 411 indicate some loss of the deposited material. The observations suggest deposition of a surface film likely consisting of dust mobilized by impingement of the sky crane's terminal descent engine plumes with surface fines during Curiosity's landing. New APXS software has been used to model the thin film that coated the calibration target on landing. The results suggest that a film of about 100 nm thickness, and containing predominantly MgO, Fe 2O3, SO3, Cl and Na2O could give rise to the observed spectral changes. If this film is also present on the alpha particle sources within the APXS, then its effect is negligible and the terrestrial calibration remains appropriate.
dc.publisherElsevier
dc.sourceNuclear Instruments and Methods in Physics Research: Section B
dc.titleThe Mars Science Laboratory APXS calibration target: Comparison of Martian measurements with the terrestrial calibration
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume323
dc.date.issued2014
local.identifier.absfor040302 - Extraterrestrial Geology
local.identifier.ariespublicationU3488905xPUB1760
local.type.statusPublished Version
local.contributor.affiliationCampbell, John, Guelph-Waterloo Physics Institute
local.contributor.affiliationKing, Penelope, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationBurkemper, Laura K, University of New Mexico
local.contributor.affiliationBerger, Jeffrey, University of New Mexico
local.contributor.affiliationGellert, Ralph, Guelph-Waterloo Physics Institute
local.contributor.affiliationBoyd, Nicholas, University of Guelph
local.contributor.affiliationPerrett, Glynis, University of Guelph
local.contributor.affiliationPradler, I, University of Guelph
local.contributor.affiliationThompson, Lucy, University of New Brunswick
local.contributor.affiliationEdgett, Kenneth, Malin Space Science Systems
local.contributor.affiliationYingst, R.A., Planetary Science Institute
local.description.embargo2037-12-31
local.bibliographicCitation.startpage49
local.bibliographicCitation.lastpage58
local.identifier.doi10.1016/j.nimb.2014.01.011
local.identifier.absseo970104 - Expanding Knowledge in the Earth Sciences
dc.date.updated2015-12-10T11:12:53Z
local.identifier.scopusID2-s2.0-84893749916
CollectionsANU Research Publications

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