Speaker
Keita Seto
Description
See the full Abstract at http://ocs.ciemat.es/EPS2018ABS/pdf/P4.2026.pdf
Investigation of radiation reaction at ELI-NP
K. Seto1, T. Moritaka2, K. Homma3,4, Y. Nakamiya1,
J. F. Ong1, L. D’Alessi1 and O. Tesileanu1
1
Extreme Light Infrastructure - Nuclear Physics (ELI-NP)/ Horia Hulubei National Institute
for R&D in Physics and Nuclear Engineering, Ilfov, Romania
2
National Institute for Fusion Science, Gifu, Japan
3
Graduate School of Science, Hiroshima Univ., Hiroshima, Japan
4
International Center for Zetta-watt Science and Technology, École Polytechnique, France
In the rapid development of high-power and high-intensity lasers in the world, the maximum
laser power and intensity will reach O(10PW-1023W/cm2) soon. Extreme Light Infrastructure
– Nuclear Physics (ELI-NP) is one of the research centers which has the 2 arms of the 10PW
lasers to create such extremely high-intensity light, and the electron LINAC up to 720MeV to
create gamma photons of O(~19.5MeV) via the inverse Compton scattering [1].
Radiation reaction (RR), the back-reaction acting on a radiating electron, has become
important in laser-plasma science due to the construction of these high-intensity lasers. One
of its typical predictions is that more than 80% of the electron’s energy is lost in RR in the
case of beam parameters similar to the ones of ELI-NP [2]. The work was performed in
purely classical dynamics, however, the importance of the quantum corrections depending on
laser intensity has been recently suggested [3]. Theoretical models with quantum corrections
have been proposed by many authors. To investigate this, we plan to examine the RR effect
by the head-on collision between the high-energy electrons of 720MeV from LINAC and the
high-intensity laser (>1022W/cm2) at ELI-NP [4].
In this presentation, we will give the schematic idea of the RR experiment at ELI-NP.
In addition, we will also show the theoretical model of RR developed, “RR acting on a
relativistic and Brownian scalar electron”, as the quantization of the Lorentz-Abraham-Dirac
equation in classical dynamics [5].
[1] ELI-NP: https://www.eli-np.ro/
[2] J. Koga, Phys. Rev. E 70,046502 (2004).
[3] For example, K. Seto, Prog. Theor. Exp. Phys. 2015, 103A01 (2015).
[4] K. Homma, et. al., Rom. Rep. Phys. 68, Supplement, S233 (2016).
[5] K. Seto, arXiv:1603.03379v5 (2017).
