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Title: Short pulse, high resolution, backlighters for point projection high-energy radiography at the National Ignition Facility

Abstract

High-resolution, high-energy X-ray backlighters are very active area of research for radiography experiments at the National Ignition Facility (NIF) [Miller et al., Nucl. Fusion 44, S228 (2004)], in particular those aiming at obtaining Compton-scattering produced radiographs from the cold, dense fuel surrounding the hot spot. We report on experiments to generate and characterize point-projection-geometry backlighters using short pulses from the advanced radiographic capability (ARC) [Crane et al., J. Phys. 244, 032003 (2010); Di Nicola et al., Proc. SPIE 2015, 93450I-12], at the NIF, focused on Au micro-wires. We show the first hard X-ray radiographs, at photon energies exceeding 60 keV, of static objects obtained with 30 ps-long ARC laser pulses, and the measurements of strength of the X-ray emission, the pulse duration and the source size of the Au micro-wire backlighters. For the latter, a novel technique has been developed and successfully applied.

Authors:
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  1. Lawrence Livermore National Laboratory, Livermore, California 94550, USA
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1361877
Alternate Identifier(s):
OSTI ID: 1374520; OSTI ID: 1421174
Report Number(s):
LLNL-JRNL-734514
Journal ID: ISSN 1070-664X; PHPAEN; 10.1063/1.4983137
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Published Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Name: Physics of Plasmas Journal Volume: 24 Journal Issue: 5; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; radiography; gold; photons; image sensors; hard X-rays

Citation Formats

Tommasini, R., Bailey, C., Bradley, D. K., Bowers, M., Chen, H., Di Nicola, J. M., Di Nicola, P., Gururangan, G., Hall, G. N., Hardy, C. M., Hargrove, D., Hermann, M., Hohenberger, M., Holder, J. P., Hsing, W., Izumi, N., Kalantar, D., Khan, S., Kroll, J., Landen, O. L., Lawson, J., Martinez, D., Masters, N., Nafziger, J. R., Nagel, S. R., Nikroo, A., Okui, J., Palmer, D., Sigurdsson, R., Vonhof, S., Wallace, R. J., and Zobrist, T. Short pulse, high resolution, backlighters for point projection high-energy radiography at the National Ignition Facility. United States: N. p., 2017. Web. doi:10.1063/1.4983137.
Tommasini, R., Bailey, C., Bradley, D. K., Bowers, M., Chen, H., Di Nicola, J. M., Di Nicola, P., Gururangan, G., Hall, G. N., Hardy, C. M., Hargrove, D., Hermann, M., Hohenberger, M., Holder, J. P., Hsing, W., Izumi, N., Kalantar, D., Khan, S., Kroll, J., Landen, O. L., Lawson, J., Martinez, D., Masters, N., Nafziger, J. R., Nagel, S. R., Nikroo, A., Okui, J., Palmer, D., Sigurdsson, R., Vonhof, S., Wallace, R. J., & Zobrist, T. Short pulse, high resolution, backlighters for point projection high-energy radiography at the National Ignition Facility. United States. doi:10.1063/1.4983137.
Tommasini, R., Bailey, C., Bradley, D. K., Bowers, M., Chen, H., Di Nicola, J. M., Di Nicola, P., Gururangan, G., Hall, G. N., Hardy, C. M., Hargrove, D., Hermann, M., Hohenberger, M., Holder, J. P., Hsing, W., Izumi, N., Kalantar, D., Khan, S., Kroll, J., Landen, O. L., Lawson, J., Martinez, D., Masters, N., Nafziger, J. R., Nagel, S. R., Nikroo, A., Okui, J., Palmer, D., Sigurdsson, R., Vonhof, S., Wallace, R. J., and Zobrist, T. Tue . "Short pulse, high resolution, backlighters for point projection high-energy radiography at the National Ignition Facility". United States. doi:10.1063/1.4983137.
@article{osti_1361877,
title = {Short pulse, high resolution, backlighters for point projection high-energy radiography at the National Ignition Facility},
author = {Tommasini, R. and Bailey, C. and Bradley, D. K. and Bowers, M. and Chen, H. and Di Nicola, J. M. and Di Nicola, P. and Gururangan, G. and Hall, G. N. and Hardy, C. M. and Hargrove, D. and Hermann, M. and Hohenberger, M. and Holder, J. P. and Hsing, W. and Izumi, N. and Kalantar, D. and Khan, S. and Kroll, J. and Landen, O. L. and Lawson, J. and Martinez, D. and Masters, N. and Nafziger, J. R. and Nagel, S. R. and Nikroo, A. and Okui, J. and Palmer, D. and Sigurdsson, R. and Vonhof, S. and Wallace, R. J. and Zobrist, T.},
abstractNote = {High-resolution, high-energy X-ray backlighters are very active area of research for radiography experiments at the National Ignition Facility (NIF) [Miller et al., Nucl. Fusion 44, S228 (2004)], in particular those aiming at obtaining Compton-scattering produced radiographs from the cold, dense fuel surrounding the hot spot. We report on experiments to generate and characterize point-projection-geometry backlighters using short pulses from the advanced radiographic capability (ARC) [Crane et al., J. Phys. 244, 032003 (2010); Di Nicola et al., Proc. SPIE 2015, 93450I-12], at the NIF, focused on Au micro-wires. We show the first hard X-ray radiographs, at photon energies exceeding 60 keV, of static objects obtained with 30 ps-long ARC laser pulses, and the measurements of strength of the X-ray emission, the pulse duration and the source size of the Au micro-wire backlighters. For the latter, a novel technique has been developed and successfully applied.},
doi = {10.1063/1.4983137},
journal = {Physics of Plasmas},
number = 5,
volume = 24,
place = {United States},
year = {2017},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
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DOI: 10.1063/1.4983137

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