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Journal Articles

The Applicability range of different forms of the radiation friction force in the ultrarelativistic electron interaction with electromagnetic wave (exact solutions)

Bulanov, S. S.*; Esirkepov, T. Z.; Kando, Masaki; Koga, J. K.; Bulanov, S. V.

Journal of Physics; Conference Series, 414, p.012009_1 - 012009_10, 2013/00

https://doi.org/10.1088/1742-6596/414/1/012009
 Times Cited Count：0 Percentile：0

Oral presentation

40 MeV protons from um foils irradiated by 7.5 J laser pulse

Pirozhkov, A. S.; Ogura, Koichi; Nishiuchi, Mamiko; Esirkepov, T. Z.; Tanimoto, Tsuyoshi*; Shimomura, Takuya; Kiriyama, Hiromitsu; Bulanov, S. V.; Kondo, Kiminori

no journal, , 

We have demonstrated proton acceleration up to 40 MeV from um thick metal foils irradiated by 7.5 J, 200 TW laser pulses of the J-KAREN laser at KPSI, JAEA at the on-target intensity of 10$$^{21}$$W/cm$$^2$$. This intensity level is also consistent with the measured electron temperature ranged from 10 to 16 eV. 40 MeV is a new record for the maximum energy of protons accelerated with relatively small-scale (less than 10 J) lasers.

Oral presentation

High-order harmonics from gas jet targets with multi-TW lasers at intensities $$>$$ 10$$^{18}$$ W/cm$$^2$$

Pirozhkov, A. S.; Kando, Masaki; Esirkepov, T. Z.; Faenov, A. Ya.*; Pikuz, T.; Hayashi, Yukio; Kotaki, Hideyuki; Ragozin, E. N.*; Koga, J. K.; Kiriyama, Hiromitsu; et al.

no journal, , 

We discovered a new high-order harmonic generation regime in the interaction of multi-TW relativistic-irradiance femtosecond lasers with gas jet targets. The spectra consisting of hundreds of even and odd harmonic orders are generated by either linearly or circularly polarized pulses. We proposed a new harmonic generation mechanism, where the harmonics are collectively emitted by oscillating electron spikes, whose sharpness and stability are explained by catastrophe theory.

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