From Event: SPIE Optical Engineering + Applications, 2017
We report the high energy radiography of dense material using MeV all-optical-driven inverse Compton x-ray source. The properties of the inverse-Compton x-ray source are controlled by means of electron energy, electron charge, scattering beam focal spot size and pulse duration to obtain optimized x-ray energy and high flux for dense material radiography. In this experiment, the x-ray has a photon energy of 8 MeV for maximal steel penetration depth, and a flux of 1011 x-ray photons per shot. With this novel x-ray source, we are able to demonstrate radiography of a 10 cm thick “kite” object through a steel shielding with thickness up to 40 cm in a single exposure. The radiography image of the “kite” object though the 40 cm steel has signal to noise ratio of 2 and image contrast of 0.1, and the “kite” object can be clearly distinguished in the image. Combining its tunability, ultrafast pulse duration and micron meter resolution, the all-optical-driven inverse Compton x-ray source provides unique capacities for flash radiography of dense material, and is of interest for ultrafast nuclear physics study.
Shouyuan Chen, Ping Zhang, Grigory Golovin, Baozhen Zhao, Colton Fruhling, Daniel Haden, Wenchao Yan, Cheng Liu, Sudeep Banerjee, Cameron Miller, Shaun Clarke, Sara Pozzi, and Donald P. Umstadter, "High-energy radiography of dense material with high flux Inverse-Compton x-ray source (Conference Presentation)," Proc. SPIE 10387, Advances in Laboratory-based X-Ray Sources, Optics, and Applications VI, 103870C (Presented at SPIE Optical Engineering + Applications: August 07, 2017; Published: 19 September 2017); https://doi.org/10.1117/12.2276736.5581181887001.
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