Particle acceleration in shocks     

L. O. Drury 《Astrophysics and Space Science》1995,233(1-2):251-260

The mechanism of particle acceleration by shocks is reviewed, and the resulting modifications of the shock structure contrasted with those which occur in molecular shocks with magnetic precursors. The danger associated with the use of steady models is emphasised and the applicability of the theory to cosmic ray acceleration in supernova remnants briefly discussed.  相似文献   

Electrical resistivity models of the oceanic crust based on laboratory measurements on basalts and gabbros     

M. J. Drury 《Geophysical Journal International》1979,56(2):241-253

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Distinction between amorphous and healed planar deformation features in shocked quartz using composite color scanning electron microscope cathodoluminescence (SEM‐CL) imaging          下载免费PDF全文

Maartje F. Hamers  Gill M. Pennock  Marco Herwegh  Martyn R. Drury 《Meteoritics & planetary science》2016,51(10):1914-1931

Planar deformation features (PDFs) in quartz are one of the most reliable and most widely used forms of evidence for hypervelocity impact. PDFs can be identified in scanning electron microscope cathodoluminescence (SEM‐CL) images, but not all PDFs show the same CL behavior: there are nonluminescent and red luminescent PDFs. This study aims to explain the origin of the different CL emissions in PDFs. Focused ion beam (FIB) thin foils were prepared of specific sample locations selected in composite color SEM‐CL images and were analyzed in a transmission electron microscope (TEM). The FIB preparation technique allowed a direct, often one‐to‐one correlation between the CL images and the defect structure observed in TEM. This correlation shows that composite color SEM‐CL imaging allows distinction between amorphous PDFs on one hand and healed PDFs and basal Brazil twins on the other: nonluminescent PDFs are amorphous, while healed PDFs and basal Brazil twins are red luminescent, with a dominant emission peak at 650 nm. We suggest that the red luminescence is the result of preferential beam damage along dislocations, fluid inclusions, and twin boundaries. Furthermore, a high‐pressure phase (possibly stishovite) in PDFs can be detected in color SEM‐CL images by its blue luminescence.  相似文献