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Title: Single-pulse x-ray diffraction using polycapillary optics for in situ dynamic diffraction

Abstract

Diagnostic use of single-pulse x-ray diffraction (XRD) at pulsed power facilities can be challenging due to factors such as the high flux and brightness requirements for diffraction and the geometric constraints of experimental platforms. By necessity, the x-ray source is usually positioned very close, within a few inches of the sample. On dynamic compression platforms, this puts the x-ray source in the debris field. We coupled x-ray polycapillary optics to a single-shot needle-and-washer x-ray diode source using a laser-based alignment scheme to obtain high-quality x-ray diffraction using a single 16 ns x-ray pulse with the source >1 m from the sample. The system was tested on a Mo sample in reflection geometry using 17 keV x-rays from a Mo anode. We also identified an anode conditioning effect that increased the x-ray intensity by 180%. Quantitative measurements of the x-ray focal spot produced by the polycapillary yielded a total x-ray flux on the sample of 3.3 ± 0.5 × 10{sup 7} molybdenum Kα photons.

Authors:
; ; ; ; ;  [1];  [2]
  1. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
  2. National Security Technologies LLC, Los Alamos, New Mexico 87544 (United States)
Publication Date:
OSTI Identifier:
22597661
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 87; Journal Issue: 8; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALIGNMENT; ANODES; BRIGHTNESS; COMPRESSION; DIAGNOSTIC USES; GEOMETRY; KEV RANGE 10-100; LASERS; LIMITING VALUES; MOLYBDENUM; OPTICS; PHOTONS; PULSES; REFLECTION; X RADIATION; X-RAY DIFFRACTION; X-RAY SOURCES

Citation Formats

Maddox, B. R., E-mail: maddox3@llnl.gov, Akin, M. C., E-mail: akin1@llnl.gov, Teruya, A., Hunt, D., Hahn, D., Cradick, J., and Morgan, D. V. Single-pulse x-ray diffraction using polycapillary optics for in situ dynamic diffraction. United States: N. p., 2016. Web. doi:10.1063/1.4960812.
Maddox, B. R., E-mail: maddox3@llnl.gov, Akin, M. C., E-mail: akin1@llnl.gov, Teruya, A., Hunt, D., Hahn, D., Cradick, J., & Morgan, D. V. Single-pulse x-ray diffraction using polycapillary optics for in situ dynamic diffraction. United States. doi:10.1063/1.4960812.
Maddox, B. R., E-mail: maddox3@llnl.gov, Akin, M. C., E-mail: akin1@llnl.gov, Teruya, A., Hunt, D., Hahn, D., Cradick, J., and Morgan, D. V. Mon . "Single-pulse x-ray diffraction using polycapillary optics for in situ dynamic diffraction". United States. doi:10.1063/1.4960812.
@article{osti_22597661,
title = {Single-pulse x-ray diffraction using polycapillary optics for in situ dynamic diffraction},
author = {Maddox, B. R., E-mail: maddox3@llnl.gov and Akin, M. C., E-mail: akin1@llnl.gov and Teruya, A. and Hunt, D. and Hahn, D. and Cradick, J. and Morgan, D. V.},
abstractNote = {Diagnostic use of single-pulse x-ray diffraction (XRD) at pulsed power facilities can be challenging due to factors such as the high flux and brightness requirements for diffraction and the geometric constraints of experimental platforms. By necessity, the x-ray source is usually positioned very close, within a few inches of the sample. On dynamic compression platforms, this puts the x-ray source in the debris field. We coupled x-ray polycapillary optics to a single-shot needle-and-washer x-ray diode source using a laser-based alignment scheme to obtain high-quality x-ray diffraction using a single 16 ns x-ray pulse with the source >1 m from the sample. The system was tested on a Mo sample in reflection geometry using 17 keV x-rays from a Mo anode. We also identified an anode conditioning effect that increased the x-ray intensity by 180%. Quantitative measurements of the x-ray focal spot produced by the polycapillary yielded a total x-ray flux on the sample of 3.3 ± 0.5 × 10{sup 7} molybdenum Kα photons.},
doi = {10.1063/1.4960812},
journal = {Review of Scientific Instruments},
number = 8,
volume = 87,
place = {United States},
year = {Mon Aug 15 00:00:00 EDT 2016},
month = {Mon Aug 15 00:00:00 EDT 2016}
}