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

被引：29

作者：

Ping, Y. ^{[1
]}

Hicks, D. G. ^{[1
]}

Yaakobi, B. ^{[2
]}

Coppari, F. ^{[1
]}

Eggert, J. ^{[1
]}

Collins, G. W. ^{[1
]}

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[2] Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2013年 / 84卷 / 12期

关键词：

NEAR-EDGE STRUCTURE;

D O I：

10.1063/1.4841935

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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. (C) 2013 AIP Publishing LLC.

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页数：5

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