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Photon-photon scattering with high energy photons generated from relativistic mirrors

相対論鏡から生成される高エネルギー光子による光子-光子衝突

Koga, J. K.; Bulanov, S. V.; Esirkepov, T. Z.; Pirozhkov, A. S.; 神門 正城; Rosanov, N. N.*

Koga, J. K.; Bulanov, S. V.; Esirkepov, T. Z.; Pirozhkov, A. S.; Kando, Masaki; Rosanov, N. N.*

Photon-photon scattering is a fundamental theoretical prediction of quantum electrodynamics. However, no direct experimental measurement has been achieved at photon energies far below the rest mass energy of electrons. This can be attributed to the extremely small scattering cross section. For photon energies much less than the electron rest mass the scattering cross section increases as the sixth power of the photon energy. Therefore, measuring photon-photon scattering at higher energies is advantageous. To generate these high energy photon beams we propose using laser pulses reflected and frequency up-shifted by mirrors moving at relativistic velocities. We find that the resulting effective photon luminosities are high enough so that observing photon-photon scattering in the keV photon energy range could be possible with current/near future and next generation laser systems.

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