Author:
Mishra Shivam Kumar,Sharma Sarveshwar,Sengupta Sudip
Abstract
AbstractThe effect of radiation-reaction force on the dynamics of a charged particle in an intense focused light wave is investigated using the physically appealing Hartemann-Luhmann equation of motion. It is found that, irrespective of the choice of initial conditions, radiation reaction force causes the charged particle to cross the focal region, provided the particle is driven into regions where the radiation reaction force dominates over the Lorentz force, thus enhancing the forward energy gained by the particle from the intense light wave. This result is in sharp contrast to the well known result, derived in the absence of radiation reaction forces, where for certain initial conditions the particle reflects from the high intensity region of the focused light wave, thereby losing forward energy. From the perspective of energy gain, our studies clearly show that the parameter space for forward energy gain which is reduced by ponderomotive effects is compensated by radiation reaction effects. These results, which are of relevance to the present day direct laser acceleration schemes of charged particle, also agrees with that obtained using the well known Landau-Lifshitz equation of motion.
Publisher
Springer Science and Business Media LLC
Reference58 articles.
1. Landau, L. D. & Lifshitz, E. M. The Classical Theory of Fields (Butterworth-Heinemann, 1980).
2. Gibbon, P. Short Pulse Laser Interaction with Matter (Imperial College Press, 2005).
3. Shebalin, J. V. An exact solution to the relativistic equation of motion of a charged particle driven by a linearly polarized electromagnetic wave. IEEE Trans. Plasma Sci. 16, 390–392. https://doi.org/10.1109/27.3847 (1988).
4. Sagar, V., Sengupta, S. & Kaw, P. Exact analysis of particle dynamics in combined field of finite duration laser pulse and static axial magnetic field. Phys. Plasmas 19, 113117. https://doi.org/10.1063/1.4769096 (2012).
5. Kolomenskii, A. & Lebedev, A. The autoresonance motion of a particle in a plane electromagnetic wave. Doklady Akad. Nauk SSSR 145, 053104 (1962).
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