Enhancement of x-rays generated by a guided laser wakefield accelerator inside capillary tubes

J. Ju, K. Svensson, A. Döpp, H. E. Ferrari, K. Cassou, O. Neveu, G. Genoud, F. Wojda, M. Burza, A. Persson, O. Lundh, C. G. Wahlström, B. Cros

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11 Citations (Scopus)

Abstract

Electrons accelerated in the nonlinear regime in a laser wakefield accelerator experience transverse oscillations inside the plasma cavity, giving rise to ultra-short pulsed x-rays, also called the betatron radiation. We show that the fluence of x-ray can be enhanced by more than one order of magnitude when the laser is guided by a 10 mm long capillary tube instead of interacting with a 2 mm gas jet. X-rays with a synchrotron-like spectrum and associated critical energy ∼ 5 keV, with a peak brightness of ∼ 1 × 10 21 ph/s/mm 2/mrad 2+/0.1BW, were achieved by employing 16 TW laser pulses.

Original languageEnglish
Article number191106
JournalApplied Physics Letters
Volume100
Issue number19
DOIs
Publication statusPublished - 7 May 2012
MoE publication typeNot Eligible

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    Ju, J., Svensson, K., Döpp, A., Ferrari, H. E., Cassou, K., Neveu, O., Genoud, G., Wojda, F., Burza, M., Persson, A., Lundh, O., Wahlström, C. G., & Cros, B. (2012). Enhancement of x-rays generated by a guided laser wakefield accelerator inside capillary tubes. Applied Physics Letters, 100(19), [191106]. https://doi.org/10.1063/1.4712594