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The paraxial diode is routinely fielded on a number of AWE pulsed-power accelerators to provide a flash X-ray source for use in radiography experiments. In these diodes, a relativistic 30-40 kA electron beam is created in a vacuum diode gap, passed through a thin anode foil, and then transported, in air at 1.1 Torr, to a high-Z metal target, producing Bremsstrahlung radiation. At present, this diode...
Summary form only given. Development of intense electron beam-driven diodes for flash X-ray radiography is being carried out at 7.5-12 MV on the RITS-6 accelerator at Sandia National Laboratories. One of several diodes under investigation is the paraxial diode, which employs a gas-filled transport cell to focus an electron beam onto a high-atomic-number target to generate X-rays. Three key objectives...
Summary form only given. In flash X-ray radiography, one of the key goals is to focus an electron beam onto a high-Z-target to generate X-rays. One of several goals is to create a small radiographic spot. The paraxial diode, which utilizes a gas-filled transport cell to focus the beam into a small spot, has been investigated for several decades. It has been shown in simulations using LSP, a particle-in-cell...
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