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arXiv · 1201.1252

Tuning the electron energy by controlling the density perturbation position in laser plasma accelerators

P. Brijesh·C. Thaury·K. Ta Phuoc·S. Corde·G. Lambert·V. Malka·S. P. D. Mangles·M. Bloom·S. Kneip
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Abstract

A density perturbation produced in an underdense plasma was used to improve the quality of electron bunches produced in the laser-plasma wakefield acceleration scheme. Quasi-monoenergetic electrons were generated by controlled injection in the longitudinal density gradients of the density perturbation. By tuning the position of the density perturbation along the laser propagation axis, a fine control of the electron energy from a mean value of 60 MeV to 120 MeV has been demonstrated with a relative energy-spread of 15 +/- 3.6%, divergence of 4 +/- 0.8 mrad and charge of 6 +/- 1.8 pC.

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P. Brijesh, C. Thaury, K. Ta Phuoc, S. Corde, G. Lambert, V. Malka, S. P. D. Mangles, M. Bloom, S. Kneip. 2012-01-05. Tuning the electron energy by controlling the density perturbation position in laser plasma accelerators. https://doi.org/10.1063/1.4725421

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