10 (micro)m and 5 (micro)m Pinhole-Assisted Point-Projection Backlit Imaging for NIF

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Pinhole-assisted point-projection backlighting with 10{micro}m and 5 {micro}m pinholes placed a small distance of order 1 mm away from the backlighter produces images with large field of view and high resolution. Pinholes placed closely to high-power backlighter sources can vaporize and close due to x-ray driven ablation, thereby limiting the usefulness of this method. A study of streaked 1-D backlit imaging of 25 {micro}m W wires using the OMEGA laser is presented. The pinhole closure timescale for 10 {micro}m pinholes placed 0.45 mm and 1 mm distant from the backlighter is 1.3 ns and 2.2 ns, respectively. Similar timescales for … continued below

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Bullock, A. B.; Landen, O. L. & Bradley, D. K. June 5, 2001.

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Pinhole-assisted point-projection backlighting with 10{micro}m and 5 {micro}m pinholes placed a small distance of order 1 mm away from the backlighter produces images with large field of view and high resolution. Pinholes placed closely to high-power backlighter sources can vaporize and close due to x-ray driven ablation, thereby limiting the usefulness of this method. A study of streaked 1-D backlit imaging of 25 {micro}m W wires using the OMEGA laser is presented. The pinhole closure timescale for 10 {micro}m pinholes placed 0.45 mm and 1 mm distant from the backlighter is 1.3 ns and 2.2 ns, respectively. Similar timescales for 5 {micro}m pinholes is also presented. Successful wire imaging prior to pinhole closure is clearly demonstrated.

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  • 13th Topical Conference on High-Temperature Plasma Diagnostics, Tucson, AZ (US), 06/18/2000--06/22/2000

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  • Report No.: UCRL-JC-137904
  • Grant Number: W-7405-Eng-48
  • Office of Scientific & Technical Information Report Number: 792367
  • Archival Resource Key: ark:/67531/metadc742645

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  • June 5, 2001

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  • Oct. 19, 2015, 7:39 p.m.

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Bullock, A. B.; Landen, O. L. & Bradley, D. K. 10 (micro)m and 5 (micro)m Pinhole-Assisted Point-Projection Backlit Imaging for NIF, article, June 5, 2001; Livermore, California. (https://digital.library.unt.edu/ark:/67531/metadc742645/: accessed May 28, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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