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Abstract
A radiating electron source is shown to be created by a laser pulse (with intensity of 10^23 W/cm^2 and duration equal to 30 fs) interacting with a near-critical density plasma. It is shown that the back radiation reaction resulting from high energy synchrotron radiation tends to counteract the action of the ponderomotive force. This enhances the collective dynamics of the radiating electrons in the highest field areas, resulting in the production of a compact radiation source (containing 80% of the synchrotron radiation emission), with an energy on the order of tens of MeV over the laser pulse duration. These phenomena are investigated using a QED-particle-in-cell code, and compared with a kinetic model accounting for the radiation reaction force in the electron distribution function. The results shed new light on electron-photon sources at ultra-high laser intensities and could be tested on future laser facilities.
Original language | English |
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Article number | 083117 |
Number of pages | 9 |
Journal | Physics of Plasmas |
Volume | 23 |
Issue number | 8 |
DOIs | |
Publication status | Published - 16 Aug 2016 |
Keywords
- radiating electron source
- laser-foil interactions
- laser pulse
- laser-plasma interactions
- radiation reaction
- electron equation of motion
- high energy synchrotron radiation
- particle-in-cell simulations
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Dive into the research topics of 'Radiating electron source generation in ultraintense laser-foil interactions'. Together they form a unique fingerprint.Projects
- 2 Finished
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Laser-Plasma Interactions at the Intensity Frontier: the Transition to the QED-Plasma Regime
McKenna, P. (Principal Investigator)
EPSRC (Engineering and Physical Sciences Research Council)
11/06/15 → 10/06/19
Project: Research
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Multi-PetaWatt Laser-Plasma Interactions: A New Frontier in Physics
McKenna, P. (Fellow)
EPSRC (Engineering and Physical Sciences Research Council)
1/03/12 → 28/02/17
Project: Research Fellowship
Datasets
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Radiating electron source generation in ultraintense laser-foil interactions
Capdessus, R. (Creator), King, M. (Contributor) & McKenna, P. (Contributor), University of Strathclyde, 26 Jul 2016
DOI: 10.15129/2aadd4e6-2311-4172-afa0-84a464462aec
Dataset