Overview of Mars surface geochemical diversity through Alpha Particle X-Ray Spectrometer data multidimensional analysis: First attempt at modeling rock alteration
نویسندگان
چکیده
منابع مشابه
Mineralogy of volcanic rocks in Gusev Crater, Mars: Reconciling Mössbauer, Alpha Particle X-Ray Spectrometer, and Miniature Thermal Emission Spectrometer spectra
[1] Complete sets of mineral abundances for relatively unaltered volcanic or volcaniclastic rocks in Gusev Crater have been determined by modeling Mössbauer subspectral areas as mineral weight percentages, and combining those percentages with the proportions of iron-free minerals not detected by Mössbauer (normative plagioclase, apatite, and chromite, as calculated from Alpha Particle X-Ray Spe...
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PFS is a Fourier spectrometer developed for Mars 96 first and for Mars Express later. Mars express was launched from Baikonour on June 2, 2003 , and reached the Martian orbit on December 25 , 2003. The spectrometer covers the wavelength range from 1.2 to 5 microns and from 5 to 50 microns. At Mars we have operated the experiment on 20 orbits roughly, up to now. A power problem on the spacecraft...
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One of the advantages of X-ray fluorescence XRF analysis is its ability to perform accurate quantitative analysis over a wide range of elements with relative ease. In addition, its high sensitivity makes it ideal for trace elemental analysis. The establishment of analytical conditions for XRF is straightforward, including the determination of spectral line overlap correction factors. As with mo...
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The development of a wavelength-dispersive spectrometer for microfluorescence analysis at the X-ray Microscopy ID21 beamline of the European Synchrotron Radiation Facility (ESRF) is reported. The spectrometer is based on a polycapillary optic for X-ray fluorescence collection and is operated in a flat-crystal geometry. The design considerations as well as operation characteristics of the spectr...
متن کاملA New Approach to Fitting the Spectra from the Mars Rover Alpha-particle X-ray Spectrometers
A computer code, based upon the existing GUPIX code for PIXE analysis, has been developed to fit X-ray spectra that are excited simultaneously by both XRF and PIXE. Full matrix corrections for both excitation modes are included, and element concentrations are deduced. The code is intended for eventual use in processing spectra from the alpha-particle X-ray spectrometers aboard the Mars Explorat...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research
سال: 2008
ISSN: 0148-0227
DOI: 10.1029/2007je003010