Radiating electron source generation in ultraintense laser-foil interactions

R. Capdessus, M. King, P. McKenna

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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 languageEnglish
Article number083117
Number of pages9
JournalPhysics of Plasmas
Issue number8
Publication statusPublished - 16 Aug 2016


  • 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



Radiating electron source generation in ultraintense laser-foil interactions

Capdessus, R. (Creator), King, M. (Contributor) & McKenna, P. (Contributor), University of Strathclyde, 26 Jul 2016


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