Structures of Astromaterials Revealed by EBSD

Zolensky, M

关键词: ASTEROIDS;    BACKSCATTERING;    CHONDRITES;    CRYSTAL STRUCTURE;    ELECTRON DIFFRACTION;    METEORITE PARENT BODIES;    METEORITIC COMPOSITION;    MINERALS;    ALUMINUM OXIDES;    CRYSTALLOGRAPHY;    HIGH PRESSURE;    SYNCHROTRONS;    TRANSMISSION ELECTRON MICROSCOPY;    X RAY DIFFRACTION;    UREILITES;   

RP-ID  :  JSC-E-DAA-TN49322

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Groups at the Johnson Space Center and the University of Tokyo have been using electron back-scattered diffraction (EBSD) to reveal the crystal structures of extraterrestrial minerals for many years. Even though we also routinely use transmission electron microscopy, synchrotron X-ray diffraction (SXRD), and conventional electron diffraction, we find that EBSD is the most powerful technique for crystal structure elucidation in many instances. In this talk I describe a few of the cases where we have found EBSD to provide crucial, unique information. See attachment.