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Femtosecond X-ray generation via the Thomson scattering of a terawatt laser from electron bunches produced from the LWFA utilizing a plasma density transition

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6 Author(s)
Hafz, N. ; Center for Adv. Accel., Korea Electrotechnol. Res. Inst., Changwon, South Korea ; Lee, H.J. ; Kim, J.U. ; Kim, G.H.
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We propose a novel experimental scheme for a compact and tunable X-ray source capable of producing X-ray pulses with a few tens of femtosecond duration. This new source is simple; it does not require an RF-based accelerator or injector. It is based on the Thomson back-scattering of a terawatt femtosecond laser from the megaelectronvolt-level plasma-accelerated electrons. Here, we present particle-in-cell simulation results for the ultrashort e-beam generation from the laser-wakefield accelerators with a plasma-density transition and the basic characteristics of the X-ray generation. Using a 20-TW 40-fs laser system, we are going to perform an experiment for generating ultrashort X-rays via the Thomson scattering.

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Plasma Science, IEEE Transactions on  (Volume:31 ,  Issue: 6 )