A platform for x-ray absorption fine structure study of dynamically compressed materials above 1 Mbar.

Ping, Y; Hicks, D G; Yaakobi, B; Coppari, F; Eggert, J; Collins, G W

Ping, Y; Hicks, D G; Yaakobi, B; Coppari, F; Eggert, J; Collins, G W.

Afiliación

Ping Y; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
Hicks DG; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
Yaakobi B; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.
Coppari F; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
Eggert J; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
Collins GW; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

Rev Sci Instrum ; 84(12): 123105, 2013 Dec.

Article en En | MEDLINE | ID: mdl-24387418

RESUMEN

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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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Rev Sci Instrum Año: 2013 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos

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