Bloom, MS;
Streeter, MJ;
Kneip, S;
Bendoyro, RA;
Cheklov, O;
Cole, JM;
Doepp, A;
... Mangles, SPD; + view all
(2020)
Bright x-ray radiation from plasma bubbles in an evolving laser wakefield accelerator.
Physical Review Accelerators and Beams
, 23
(6)
, Article 061301. 10.1103/PhysRevAccelBeams.23.061301.
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Abstract
We show that the properties of the electron beam and bright x rays produced by a laser wakefield accelerator can be predicted if the distance over which the laser self-focuses and compresses prior to self-injection is taken into account. A model based on oscillations of the beam inside a plasma bubble shows that performance is optimized when the plasma length is matched to the laser depletion length. With a 200 TW laser pulse, this results in an x-ray beam with a median photon energy of 20 keV, > 6 × 10 8 photons above 1 keV per shot, and a peak brightness of 3 × 10 22 photons s − 1 mra d − 2 mm − 2 ( 0.1 % BW ) − 1 .
| Type: | Article |
|---|---|
| Title: | Bright x-ray radiation from plasma bubbles in an evolving laser wakefield accelerator |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevAccelBeams.23.061301 |
| Publisher version: | https://doi.org/10.1103/PhysRevAccelBeams.23.06130... |
| Language: | English |
| Additional information: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/). Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. |
| Keywords: | Laser wakefield acceleration, Plasma acceleration & new acceleration techniques, X-ray generation in plasmas |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10105270 |
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