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論文

Helium-3 and Helium-4 acceleration by high power laser pulses for hadron therapy

Bulanov, S. S.*; Esarey, E.*; Schroeder, C. B.*; Leemans, W.*; Bulanov, S. V.; Margarone, D.*; Korn, G.*; Haberer, T.*

Physical Review Special Topics; Accelerators and Beams, 18(6), p.061302_1 - 061302_6, 2015/06

AA2015-0189.pdf:0.52MB

 被引用回数:22 パーセンタイル:84.46(Physics, Nuclear)

We show that He$$^{3}$$ ions, having almost the same penetration depth as He$$^{4}$$ with the same energy per nucleon, require less laser power to be accelerated to the required energy for the hadron therapy.

論文

Enhancement of maximum attainable ion energy in the radiation pressure acceleration regime using a guiding structure

Bulanov, S. S.*; Esarey, E.*; Schroeder, C. B.*; Bulanov, S. V.; Esirkepov, T. Z.; 神門 正城; Pegoraro, F.*; Leemans, W. P.*

Physical Review Letters, 114(10), p.105003_1 - 105003_5, 2015/03

AA2014-0849.pdf:0.58MB

 被引用回数:26 パーセンタイル:82.5(Physics, Multidisciplinary)

It is shown that there is a fundamental limit on the maximum attainable ion energy, which is determined by the group velocity of the laser.

論文

On the design of experiments to study extreme field limits

Bulanov, S. S.*; Chen, M.*; Schroeder, C. B.*; Esarey, E.*; Leemans, W. P.*; Bulanov, S. V.; Esirkepov, T. Z.; 神門 正城; Koga, J. K.; Zhidkov, A. G.*; et al.

AIP Conference Proceedings 1507, p.825 - 830, 2012/12

 被引用回数:7 パーセンタイル:91.38

We propose the experiments on the collision of intense laser pulses with energetic electron bunches and on the collision of two or more intense laser pulses for studying extreme field limits in the nonlinear interaction of electromagnetic waves. The regimes of dominant radiation reaction, which completely changes the electromagnetic wave matter interaction, will be revealed in such experiments. This will result in a new powerful source of ultra short high brightness $$gamma$$-ray pulses. A possibility of the demonstration of the electron positron pair creation from vacuum in the collision of two or more intense laser pulses is discussed.

論文

On the breaking of a plasma wave in a thermal plasma, 1; The Structure of the density singularity

Bulanov, S. V.; Esirkepov, T. Z.; 神門 正城; Koga, J. K.; Pirozhkov, A. S.; 中村 龍史; Bulanov, S. S.*; Schroeder, C. B.*; Esarey, E.*; Califano, F.*; et al.

Physics of Plasmas, 19(11), p.113102_1 - 113102_14, 2012/11

 被引用回数:16 パーセンタイル:60.35(Physics, Fluids & Plasmas)

The structure of the singularity that is formed in a relativistically large amplitude plasma wave close to the wave breaking limit is found by using a simple waterbag electron distribution function. The electron density distribution in the breaking wave has a typical "peakon" form. The maximum value of the electric field in a thermal breaking plasma is obtained and compared to the cold plasma limit. The results of computer simulations for different initial electron distribution functions are in agreement with the theoretical conclusions.

論文

On the breaking of a plasma wave in a thermal plasma, 2; Electromagnetic wave interaction with the breaking plasma wave

Bulanov, S. V.; Esirkepov, T. Z.; 神門 正城; Koga, J. K.; Pirozhkov, A. S.; 中村 龍史; Bulanov, S. S.*; Schroeder, C. B.*; Esarey, E.*; Califano, F.*; et al.

Physics of Plasmas, 19(11), p.113103_1 - 113103_7, 2012/11

 被引用回数:13 パーセンタイル:53.19(Physics, Fluids & Plasmas)

The structure of the density singularity formed in a relativistically large amplitude plasma wave close to the wave breaking limit leads to a refraction coefficient which has a coordinate dependence with discontinuous derivatives. This results in a non-exponentially small above-barrier reflection of an electromagnetic wave interacting with the nonlinear plasma wave.

論文

Ion acceleration from thin foil and extended plasma targets by slow electromagnetic wave and related ion-ion beam instability

Bulanov, S. V.; Esirkepov, T. Z.; 神門 正城; Pegoraro, F.*; Bulanov, S. S.*; Geddes, C. G. R.*; Schroeder, C. B.*; Esarey, E.*; Leemans, W. P.*

Physics of Plasmas, 19(10), p.103105_1 - 103105_10, 2012/10

 被引用回数:29 パーセンタイル:80.26(Physics, Fluids & Plasmas)

When the ions are accelerated by the radiation pressure of the laser pulse, their velocity can not exceed the laser group velocity, in the case when it is less than the speed of light in vacuum. This is demonstrated in two cases corresponding to the thin foil target irradiated by a high intensity laser light and to the hole boring by the laser pulse in the extended plasma accompanied by the collisionless shock wave formation. It is found that the beams of accelerated at the collisionless shock wave front ions are unstable against the Buneman-like and the Weibel-like instabilities which result in the ion energy spectrum broadening.

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