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論文

Attractors and chaos of electron dynamics in electromagnetic standing waves

Esirkepov, T. Z.; Bulanov, S. S.*; Koga, J. K.; 神門 正城; 近藤 公伯; Rosanov, N. N.*; Korn, G.*; Bulanov, S. V.

Physics Letters A, 379(36), p.2044 - 2054, 2015/09

 被引用回数:38 パーセンタイル:89.4(Physics, Multidisciplinary)

In an electromagnetic standing wave formed by two super-intense colliding laser pulses, radiation reaction totally modifies the electron motion. The quantum corrections to the electron motion and the radiation reaction force can be independently small or large, depending on the laser intensity and wavelength, thus dividing the parameter space into 4 domains. The electron motion evolves to limit cycles and strange attractors when radiation reaction dominates. This creates a new framework for high energy physics experiments on the interaction of energetic charged particle beams and colliding super-intense laser pulses.

論文

Relativistic mirrors in plasmas; Novel results and perspectives

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

Physics-Uspekhi, 56(5), p.429 - 464, 2013/05

 被引用回数:87 パーセンタイル:82.06(Physics, Multidisciplinary)

Relativistic flying mirrors in plasmas are thin, dense electron or electron-ion layers accelerated by high-intensity electromagnetic waves to velocities close to the speed of light in the vacuum; in nonlinear media, refractive index modulations are induced by a strong electromagnetic wave. The reflection of the electromagnetic wave from the relativistic mirror results in its energy and frequency changing. In the counter-propagation configuration, the frequency of the reflected wave is multiplied by the factor proportional to the $$gamma$$-factor squared. This scientific area promises the development of sources of ultrashort X-ray pulses in the attosecond range. The expected intensity will reach the level at which the effects predicted by nonlinear quantum electrodynamics start to play a key role. In the co-propagating configuration, the energy of the electromagnetic wave is transferred to the ion energy, providing a highly efficient acceleration mechanism.

論文

Possibility of measuring photon-photon scattering via relativistic mirrors

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

Physical Review A, 86(5), p.053823_1 - 053823_10, 2012/11

 被引用回数:23 パーセンタイル:76.42(Optics)

Photon-photon scattering predicted by quantum electrodynamics has not been experimentally confirmed in the optical frequency range. This is due to its extremely small cross section in this energy range. Since the cross section rapidly increases with photon energy, we propose measuring the photon-photon scattering cross section by upshifting optical lasers to the 100 eV to keV range using four relativistic mirror schemes and colliding them. In two of the schemes we find that although the number of scattering events is small with realistic laser parameters, measurement could be possible with an accumulation of a large number of laser shots. In the two other schemes a large number of scattering events is possible, however, the use of large future laser systems will be necessary.

論文

Utilizing relativistic mirrors for photon-photon scattering

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

Europhysics Conference Abstracts (Internet), 36F, p.O5.214_1 - O5.214_4, 2012/00

Photon-photon scattering is a fundamental theoretical prediction of quantum electrodynamics. However, only an upper bounds on the cross section at photon energies of eV levels has been achieved. Since for low photon energies the scattering cross section increases as the sixth power of the photon energy, 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. The reflected laser pulses due to the double Doppler effect can have high energy, extremely short duration, coherency and can be focused to very small spots. We present the scalings of the photon-photon scattering for each relativistic mirror configuration and show where photon-photon scattering in the keV photon energy range could be observed with current/near future and next generation laser systems.

論文

Extreme field science

Bulanov, S. V.; Esirkepov, T. Z.; 林 由紀雄; 神門 正城; 桐山 博光; Koga, J. K.; 近藤 公伯; 小瀧 秀行; Pirozhkov, A. S.; Bulanov, S. S.*; et al.

Plasma Physics and Controlled Fusion, 53(12), p.124025_1 - 124025_13, 2011/12

 被引用回数:5 パーセンタイル:26.23(Physics, Fluids & Plasmas)

We discuss the progress in the development of the extreme light sources that will open new horizons for studying a wide range of the fundamental science and astrophysics problems. The regimes of dominant radiation reaction, which completely change the electromagnetic wave-matter interaction, will be revealed, resulting in a new extremely powerful source of ultra short high brightness $$gamma$$-ray pulses. The possibility of abundant electron-positron pair creation via the multi-photon processes, and possibility of reaching the critical field of quantum electrodynamics which would lead to the vacuum polarization and breakdown, are attracting high attention.

論文

Extreme field science

Bulanov, S. V.; Esirkepov, T. Z.; 林 由紀雄; 神門 正城; 桐山 博光; Koga, J. K.; 近藤 公伯; 小瀧 秀行; Pirozhkov, A. S.; Bulanov, S. S.*; et al.

Plasma Physics and Controlled Fusion, 53(12), p.124025_1 - 124025_13, 2011/11

The review is devoted to discussing progress in the development of the extreme light sources that opens new horizons for studying of a wide range of the fundamental science problems and important applications.

論文

Relativistic tennis with photons; Frequency up-shifting, light intensification and ion acceleration with flying mirrors

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

AIP Conference Proceedings 1320, p.235 - 243, 2010/12

We formulate the Flying Mirror Concept for relativistic interaction of ultra-intense electromagnetic waves with plasmas, present its theoretical description and the results of computer simulations and laboratory experiments. The reflection of the electromagnetic wave at the relativistic mirror results in its energy and frequency change due to the double Doppler effect. In the co-propagating configuration, in the radiation pressure dominant regime, the energy of the electromagnetic wave is transferred to the ion energy providing a highly efficient acceleration mechanism. In the counter-propagation configuration the frequency of the reflected wave is multiplied by the factor proportional to the $$gamma$$-factor squared.

口頭

Relativistic mirrors for photon-photon collisions

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

no journal, , 

Photon-photon scattering predicted by quantum electrodynamics has not been experimentally confirmed in the optical frequency range. This is due to its extremely smallcross section in this energy range. Since the cross section rapidly increases with photon energy, we propose measuring the photon-photon scattering cross section by upshifting optical lasers to the keV range using three relativistic mirror schemes and colliding them. We find that although the number of scattering events is small with realistic laser parameters, measurement could be possible with an accumulation of a large number of laser shots.

口頭

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

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

no journal, , 

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.

口頭

Relativistic mirrors for photon-photon scattering

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

no journal, , 

Relativistic mirrors generated in laser-plasma interactions can enable the detection of photon-photon scattering. They can up-shift and tightly focus optical laser pulses to the X-ray regime. We find that photon-photon scattering events can be observed.

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