Submillimeter-resolution radiography of shielded structures with laser-accelerated electron beams

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Abstract

We investigate the use of energetic electron beams for high-resolution radiography of flaws embedded in thick solid objects. A bright, monoenergetic electron beam (with energy >100 MeV) was generated by the process of laser-wakefield acceleration through the interaction of 50-TW, 30-fs laser pulses with a supersonic helium jet. The high energy, low divergence, and small source size of these beams make them ideal for high-resolution radiographic studies of cracks or voids embedded in dense materials that are placed at a large distance from the source. We report radiographic imaging of steel with submillimeter resolution. © 2010 The American Physical Society.

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Ramanathan, V., Banerjee, S., Powers, N., Cunningham, N., Chandler-Smith, N. A., Zhao, K., … Schultz, D. (2010). Submillimeter-resolution radiography of shielded structures with laser-accelerated electron beams. Physical Review Special Topics - Accelerators and Beams, 13(10). https://doi.org/10.1103/PhysRevSTAB.13.104701

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