Electron and X-ray Microanalysis of Planetary Materials - Changela, Hitesh
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This thesis purports the electron and X-ray microanalysis of planetary materials: from Comet 81P/Wild2 to the surface of Mars. Advanced techniques in electron microscopy and X-ray spectroscopy have been developed for the microanalysis of the nakhlite martian meteorites and Comet 81P/Wild2 samples from the Stardust Mission. Electron microprobe analysis and a Focussed Ion Beam - Scanning Electron Microscope (FIB-SEM) technique for Transmission Electron Microscopy (TEM) was used to analyse the secondary mineral assemblages in the nakhlite martian meteorites. Using these techniques, a model is…mehr

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Produktbeschreibung
This thesis purports the electron and X-ray microanalysis of planetary materials: from Comet 81P/Wild2 to the surface of Mars. Advanced techniques in electron microscopy and X-ray spectroscopy have been developed for the microanalysis of the nakhlite martian meteorites and Comet 81P/Wild2 samples from the Stardust Mission. Electron microprobe analysis and a Focussed Ion Beam - Scanning Electron Microscope (FIB-SEM) technique for Transmission Electron Microscopy (TEM) was used to analyse the secondary mineral assemblages in the nakhlite martian meteorites. Using these techniques, a model is proposed describing the formation of the nakhlites secondary assemblages by an impact-induced hydrothermal system based on the mineralogical and geochemical differences between different samples. A suite of Stardust cometary samples have also been analysed using FIB-TEM and microfocus X-ray spectroscopy that includes: X-ray Fluorescence Spectroscopy (XRF), X-ray Absorption Near-Edge Structure (XANES) and Extended X-ray Absorption Fine Structure (EXAFS) at the Diamond synchrotron, the understand the composition of Comet 81P/Wild2 and Jupiter Family Comets.
Autorenporträt
Hitesh G. Changela wrote his doctorate thesis at the University of Leicester, Space Research Centre, Department of Physics and Astronomy. Hitesh completed his Batchelors of Science in Physics and Masters by Research in Bio, Nano and X-ray Photonics at King's College London.