Abstract
Radiation losses of charged particles can become important in ultra high intensity laser plasma interaction. This process is described by the radiation back reaction term in the electron equation of motion. This term is implemented in the relativistic particle-in-cell code by using a renormalized Lorentz-Abraham-Dirac model. In the hole boring regime case of laser ion acceleration it is shown that radiation losses results in a decrease of the piston velocity.
Highlights
One of the important applications of ultra intense laser pulses is acceleration of charged particles to extremely high energies
Radiation losses of charged particles can become important in ultra high intensity laser plasma interaction
This term is implemented in the relativistic particle-in-cell code by using a renormalized Lorentz-AbrahamDirac model
Summary
One of the important applications of ultra intense laser pulses is acceleration of charged particles to extremely high energies. The domain of applicability of the classical electrodynamics is limited by the condition aL (mec2/ L)1/2 440 corresponding to the laser intensities of about 4.2 × 1023 W/cm. The domain of applicability of the classical electrodynamics is limited by the condition aL (mec2/ L)1/2 440 corresponding to the laser intensities of about 4.2 × 1023 W/cm2 In this domain Landau and Lifshitz (LL) have proposed a simplified, divergence-free version of the Lorentz-Abraham-Dirac (LAD) equation. Still limited by the condition of the classical approach, e < 1 [3], this approach is more accurate than the LL equation and it is better suited for numerical implementation in particle-in-cell (PIC) codes.
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