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Title: Polycapillary x-ray lenses for single-shot, laser-driven powder diffraction

Abstract

X-ray diffraction measurements to characterize phase transitions of dynamically compressed, high-Z matter at Mbar pressures require both sufficient photon energy and fluence to create data with high fidelity in a single shot. Large-scale laser systems can be used to generate x-ray sources above 10 keV utilizing line radiation of mid-Z elements. However, the laser-to-x-ray energy conversion efficiency at these energies is low, and thermal x-rays or hot electrons result in unwanted background. We employ polycapillary x-ray lenses in powder x-ray diffraction measurements using solid target x-ray emission from either the Z-Beamlet (ZBL) long-pulse or the Z-Petawatt (ZPW) short-pulse laser systems at Sandia National Laboratories. Polycapillary lenses allow for a 100-fold fluence increase compared to a conventional pinhole aperture while simultaneously reducing the background significantly. This enables diffraction measurements up to 16 keV at the few-photon signal level as well as diffraction experiments with ZPW at full intensity.

Authors:
ORCiD logo [1];  [1];  [1]; ORCiD logo [1];  [1];  [1];  [2];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. NM Operations, Los Alamos, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1477315
Alternate Identifier(s):
OSTI ID: 1463042
Report Number(s):
SAND-2018-10340J
Journal ID: ISSN 0034-6748; 668055
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 89; Journal Issue: 10; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Schollmeier, M., Ao, T., Field, E. S., Galloway, B. R., Kalita, P., Kimmel, M. W., Morgan, D. V., Rambo, P. K., Schwarz, J., Shores, J. E., Smith, I. C., Speas, C. S., Benage, J. F., and Porter, J. L.. Polycapillary x-ray lenses for single-shot, laser-driven powder diffraction. United States: N. p., 2018. Web. https://doi.org/10.1063/1.5036569.
Schollmeier, M., Ao, T., Field, E. S., Galloway, B. R., Kalita, P., Kimmel, M. W., Morgan, D. V., Rambo, P. K., Schwarz, J., Shores, J. E., Smith, I. C., Speas, C. S., Benage, J. F., & Porter, J. L.. Polycapillary x-ray lenses for single-shot, laser-driven powder diffraction. United States. https://doi.org/10.1063/1.5036569
Schollmeier, M., Ao, T., Field, E. S., Galloway, B. R., Kalita, P., Kimmel, M. W., Morgan, D. V., Rambo, P. K., Schwarz, J., Shores, J. E., Smith, I. C., Speas, C. S., Benage, J. F., and Porter, J. L.. Mon . "Polycapillary x-ray lenses for single-shot, laser-driven powder diffraction". United States. https://doi.org/10.1063/1.5036569. https://www.osti.gov/servlets/purl/1477315.
@article{osti_1477315,
title = {Polycapillary x-ray lenses for single-shot, laser-driven powder diffraction},
author = {Schollmeier, M. and Ao, T. and Field, E. S. and Galloway, B. R. and Kalita, P. and Kimmel, M. W. and Morgan, D. V. and Rambo, P. K. and Schwarz, J. and Shores, J. E. and Smith, I. C. and Speas, C. S. and Benage, J. F. and Porter, J. L.},
abstractNote = {X-ray diffraction measurements to characterize phase transitions of dynamically compressed, high-Z matter at Mbar pressures require both sufficient photon energy and fluence to create data with high fidelity in a single shot. Large-scale laser systems can be used to generate x-ray sources above 10 keV utilizing line radiation of mid-Z elements. However, the laser-to-x-ray energy conversion efficiency at these energies is low, and thermal x-rays or hot electrons result in unwanted background. We employ polycapillary x-ray lenses in powder x-ray diffraction measurements using solid target x-ray emission from either the Z-Beamlet (ZBL) long-pulse or the Z-Petawatt (ZPW) short-pulse laser systems at Sandia National Laboratories. Polycapillary lenses allow for a 100-fold fluence increase compared to a conventional pinhole aperture while simultaneously reducing the background significantly. This enables diffraction measurements up to 16 keV at the few-photon signal level as well as diffraction experiments with ZPW at full intensity.},
doi = {10.1063/1.5036569},
journal = {Review of Scientific Instruments},
number = 10,
volume = 89,
place = {United States},
year = {2018},
month = {8}
}

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