Maximum attainable ion energy in the radiation pressure acceleration regime

S. S. Bulanov; E. Esarey; C. B. Schroeder; S. V. Bulanov; T. Zh. Esirkepov; M. Kando; F. Pegoraro; W. P. Leemans

doi:10.1117/12.2182207

14 May 2015 Maximum attainable ion energy in the radiation pressure acceleration regime

S. S. Bulanov, E. Esarey, C. B. Schroeder, S. V. Bulanov, T. Zh. Esirkepov, M. Kando, F. Pegoraro, W. P. Leemans

Proceedings Volume 9514, Laser Acceleration of Electrons, Protons, and Ions III; and Medical Applications of Laser-Generated Beams of Particles III; 95140G (2015) https://doi.org/10.1117/12.2182207
Event: SPIE Optics + Optoelectronics, 2015, Prague, Czech Republic

Abstract

The laser group velocity plays a crucial role in laser driven acceleration of electrons and ions. In particular, a highly efficient mechanism of laser driven ion acceleration, Radiation Pressure Acceleration, has a fundamental limit on the maximum attainable ion energy, which is determined by the group velocity of the laser. However there is another limiting factor that may shed the group velocity effects. It is due to the transverse expansion of the target, which happens in the course of a tightly focused laser pulse interaction with a thin foil. Transversely expanding targets become increasingly transparent for radiation thus terminating the acceleration. Utilization of an external guiding structure for the accelerating laser pulse may provide a way of compensating for the group velocity and transverse expansion effects.

Citation Download Citation

S. S. Bulanov, E. Esarey, C. B. Schroeder, S. V. Bulanov, T. Zh. Esirkepov, M. Kando, F. Pegoraro, and W. P. Leemans "Maximum attainable ion energy in the radiation pressure acceleration regime", Proc. SPIE 9514, Laser Acceleration of Electrons, Protons, and Ions III; and Medical Applications of Laser-Generated Beams of Particles III, 95140G (14 May 2015); https://doi.org/10.1117/12.2182207

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