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A platform for x-ray absorption fine structure study of dynamically compressed materials above 1 Mbar
Y Ping1, D G Hicks1, B Yaakobi2
1Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
Abstract:
A platform consisting of a multi-shock drive and an implosion backlighter has been developed for x-ray absorption fine structure (XAFS) measurements on materials compressed to multi-Mbar pressures. The experimental setup, target design, and backlighter characteristics are presented. Extended XAFS (EXAFS) measurements for various materials have been demonstrated. A quintuple-crystal design is described to enhance the efficiency of the x-ray spectrometer, enabling observation of very weak EXAFS signals in a single shot.
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