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beam emittance

Laser and Particle Beams (1)

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Finite-emittance Wigner crystals in the bubble regime
Lars Reichwein, Johannes Thomas, Alexander Pukhov
Journal:

Laser and Particle Beams / Volume 38 / Issue 3 / September 2020

Published online by Cambridge University Press:

23 July 2020, pp. 176-180
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We study the influence of finite-emittance electron bunches in the bubble regime of laser-driven wakefield acceleration onto the microscopic structure of the bunch itself. Using resilient backpropagation (Rprop) to find the equilibrium structure, we observe that for realistic and already observed emittances the previously found crystalline structures remain intact and are only widened marginally. Higher emittances lead to larger electron displacements within the crystal and finally its breaking.