Stable, polarized betatron radiation: x-ray absorption spectroscopy in WDM unveiling ultrafast electron heating (Conference Presentation)

Benoît Mahieu; Andreas S. Doepp; Agustin Lifschitz; Antoine Doche; Cédric Thaury; Sébastien Corde; Julien Gautier; Emilien Guillaume; Victor Malka; Antoine Rousse; Noémie Jourdain; Ludovic Lecherbourg; Fabien Dorchies; Kim Ta Phuoc

doi:10.1117/12.2265874

21 June 2017 Stable, polarized betatron radiation: x-ray absorption spectroscopy in WDM unveiling ultrafast electron heating (Conference Presentation)

Benoît Mahieu, Andreas S. Doepp, Agustin Lifschitz, Antoine Doche, Cédric Thaury, Sébastien Corde, Julien Gautier, Emilien Guillaume, Victor Malka, Antoine Rousse, Noémie Jourdain, Ludovic Lecherbourg, Fabien Dorchies, Kim Ta Phuoc

Author Affiliations +

Proceedings Volume 10234, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources II; 1023404 (2017) https://doi.org/10.1117/12.2265874
Event: SPIE Optics + Optoelectronics, 2017, Prague, Czech Republic

Abstract

Betatron radiation from laser-plasma accelerators reproduces the principle of a synchrotron on a millimeter scale, but featuring femtosecond duration. Here we present the outcome of our latest developments, which now allow us to produce stable and polarized X-ray bursts. Moreover, the X-ray polarization can simply be adjusted by tuning the polarization of the laser driving the process. The excellent stability of the source is expressed in terms of pointing, flux, transverse distribution and critical energy of the spectrum. These combined features make our betatron source particularly suitable for applications in ultrafast X-ray science. In this presentation we will describe the generation process, relying on the ionization injection scheme for laser-plasma acceleration. We will show experimental measurements, numerical results and first applications in time-resolved spectroscopy.

Conference Presentation

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Benoît Mahieu, Andreas S. Doepp, Agustin Lifschitz, Antoine Doche, Cédric Thaury, Sébastien Corde, Julien Gautier, Emilien Guillaume, Victor Malka, Antoine Rousse, Noémie Jourdain, Ludovic Lecherbourg, Fabien Dorchies, and Kim Ta Phuoc "Stable, polarized betatron radiation: x-ray absorption spectroscopy in WDM unveiling ultrafast electron heating (Conference Presentation)", Proc. SPIE 10234, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources II, 1023404 (21 June 2017); https://doi.org/10.1117/12.2265874

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KEYWORDS

X-rays

Absorption spectroscopy

Polarization

Ultrafast laser spectroscopy

Wavelength division multiplexing

Femtosecond phenomena

Ionization

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