Speaker
Description
Plasma-based accelerators provide a compact and efficient means of generating ultra-relativistic particles [1], making them strong candidates for next-generation light sources. One of the most consolidated X-ray source configurations in plasma accelerators is based on nonlinear Thomson scattering [2]. Here, relativistic electrons from a plasma-based accelerator interact with a counter or copropagating, intense laser pulse. Temporal coherence and superradiance are highly sought features in this context because the peak brightness increases very favourably with the number of light-emitting particles squared [3]. This is in stark contrast with temporally incoherent sources, where the peak intensity grows linearly with the number of emitters.
This work presents results on the generation of superradiant emission from electron bunches interacting with an azimuthally polarised laser pulse. We investigate how this interaction evolves at varying electron densities and examine the collective effects that lead to enhanced, superradiant radiation. In addition, further analysis to gain deeper insight into the bunching mechanism and the underlying radiation process were also conducted, the results of which are also presented in this work.
References
[1] T. Tajima and J. M. Dawson, Phys. Rev. Lett. 43, 267 (1979).
[2] E. Esarey et al., Phys. Rev. E 48, 3003 (1993).
[3] J. Vieira et al., Nature Physics 17, pages 99–104 (2021).
