Hard X rays from laser-wakefield accelerators in density tailored plasmas

0536964 - FZÚ 2021 RIV US eng J - Journal Article
Kozlová, Michaela - Andriyash, I. - Gautier, J. - Sebban, S. - Smartsev, S. - Jourdain, Noémie - Chulagain, Uddhab - Azamoum, Y. - Tafzi, A. - Goddet, J-P. - Oubrerie, K. - Thaury, C. - Rousse, A. - Phuoc, K.T.
Hard X rays from laser-wakefield accelerators in density tailored plasmas.
Physical Review X. Roč. 10, č. 1 (2020), s. 1-7, č. článku 011061. ISSN 2160-3308. E-ISSN 2160-3308
R&D Projects: GA MŠMT EF16_019/0000789; GA MŠMT LQ1606
Grant - others:OP VVV - ADONIS(XE) CZ.02.1.01/0.0/0.0/16_019/0000789
Institutional support: RVO:68378271
Keywords : alasma accelerators * self-socusing * Gaussian beams
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 15.762, year: 2020
Method of publishing: Open access

Betatron x-ray sources from laser-plasma accelerators reproduce the principle of a synchrotron at the millimeter scale. They combine compactness, femtosecond pulse duration, broadband spectrum, and micron source size. However, when produced with terawatt class femtosecond lasers, their energy and flux are not sufficient to compete with synchrotron sources, thus limiting their dissemination and its possible applications. Here we present a simple method to enhance the energy and the flux of betatron sources without increasing the laser energy. The orbits of the relativistic electrons emitting the radiation were controlled using density tailored plasmas so that the energetic efficiency of the betatron source is increased by more than one order of magnitude.
Permanent Link: http://hdl.handle.net/11104/0314722