Stable and polarized Betatron x-ray radiation from a laser plasma accelerator in ionization injection regime

Andreas Doepp; Benoit Mahieu; Antoine Doche; Cedric Thaury; Emilien Guillaume; Agustin Lifschitz; Gabriele Grittani; Olle Lund; Martin Hansson; Julien Gautier; Michaela Kozlova; Jean Philippe Goddet; Pascal Rousseau; Amar Tafzi; Victor Malka; Antoine Rousse; Sebastien Corde; Kim Ta Phuoc

arXiv · 1509.08629

Stable and polarized Betatron x-ray radiation from a laser plasma accelerator in ionization injection regime

Andreas Doepp·Benoit Mahieu·Antoine Doche·Cedric Thaury·Emilien Guillaume·Agustin Lifschitz·Gabriele Grittani·Olle Lund·Martin Hansson·Julien Gautier·Michaela Kozlova·Jean Philippe Goddet·Pascal Rousseau·Amar Tafzi·Victor Malka·Antoine Rousse·Sebastien Corde·Kim Ta Phuoc

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Abstract

Betatron x-ray source from laser plasma interaction combines high brightness, few femtosecond duration and broad band energy spectrum. However, despite these unique features the Betatron source has a crippling drawback preventing its use for applications. Its properties significantly vary shot-to-shot and none of the developments performed so far resolved this problem. In this letter we present a simple method that allows to produce stable and bright Betatron x-ray beams. In addition, we demonstrate that this scheme provides polarized and easily tunable radiation. Experimental results show that the pointing stability is better than 10% of the beam divergence, with flux fluctuation of the order of 20% and a polarization degree reaching up to 80%

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Andreas Doepp, Benoit Mahieu, Antoine Doche, Cedric Thaury, Emilien Guillaume, Agustin Lifschitz, Gabriele Grittani, Olle Lund, Martin Hansson, Julien Gautier, Michaela Kozlova, Jean Philippe Goddet, Pascal Rousseau, Amar Tafzi, Victor Malka, Antoine Rousse, Sebastien Corde, Kim Ta Phuoc. 2015-09-29. Stable and polarized Betatron x-ray radiation from a laser plasma accelerator in ionization injection regime. https://arxiv.org/abs/1509.08629

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