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laser-plasma channel

Laser and Particle Beams (1)

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Laser wakefield acceleration of electrons from a density-modulated plasma
D.N. Gupta, K. Gopal, I.H. Nam, V.V. Kulagin, H. Suk
Journal:

Laser and Particle Beams / Volume 32 / Issue 3 / September 2014

Published online by Cambridge University Press:

29 August 2014, pp. 449-454
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This research reports the increased electron energy gain from laser wakefield acceleration in density-modulated plasma with an external magnetic field. Periodic plasma density- modulation can excite higher harmonics of different phase velocities of fundamental wakefield that can assist in improving the self-trapping of pre-accelerated electrons to accelerate them for higher energy. Furthermore, the applied magnetic field assisted self-injection can also contribute in electron energy enhancement during the acceleration. The physical mechanism is described with a theoretical formulation for this scheme. Results of two-dimensional particle-in-cell simulations are reported to understand the proposed idea.