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

29 Sep 2015  ·  Doepp Andreas, Mahieu Benoit, Doche Antoine, Thaury Cedric, Guillaume Emilien, Lifschitz Agustin, Grittani Gabriele, Lund Olle, Hansson Martin, Gautier Julien, Kozlova Michaela, Goddet Jean Philippe, Rousseau Pascal, Tafzi Amar, Malka Victor, Rousse Antoine, Corde Sebastien, Phuoc Kim Ta ·

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% read more

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Plasma Physics