Particle-in-cell simulation of acceleration of ions to GeV energies in the interactions of an ultra-intense laser pulse with two-species targets

2014 ◽  
Vol T161 ◽  
pp. 014030 ◽  
Author(s):  
Jarosław Domański ◽  
Jan Badziak ◽  
Sławomir Jabłoński
Keyword(s):  
Laser Pulse ◽  
Intense Laser ◽  
Intense Laser Pulse ◽  
Particle In Cell ◽  
Cell Simulation

scholarly journals Evolution of a high-density electron beam in the field of a super-intense laser pulse

2008 ◽  
Vol 26 (3) ◽  
pp. 397-409 ◽  
Author(s):  
V.V. Kulagin ◽  
V.A. Cherepenin ◽  
M.S. Hur ◽  
J. Lee ◽  
H. Suk
Keyword(s):  
Electron Beam ◽  
Laser Pulse ◽  
Equations Of Motion ◽  
Thomson Scattering ◽  
High Density ◽  
Intense Laser ◽  
Low Density ◽  
Intense Laser Pulse ◽  
Particle In Cell ◽  
The One

AbstractThe evolution of a high-density electron beam in the field of a super-intense laser pulse is considered. The one-dimensional (1D) theory for the description of interaction, taking into account the space-charge forces of the beam, is developed, and exact solutions for the equations of motion of the electrons are found. It was shown that the length of the high-density electron beam increases slowly in time after initial compression of the beam by the laser pulse as opposed to the low-density electron beam case, where the length is constant on average. Also, for the high-density electron beam, the sharp peak frozen into the density distribution can appear in addition to a microbunching, which is characteristic for a low-density electron beam in a super-intense laser field. Characteristic parameters for the evolution of the electron beam are calculated by an example of a step-like envelope of the laser pulse. Comparison with 1D particle-in-cell simulations shows adequacy of the derived theory. The considered issue is very important for a special two-pulse realization of a Thomson scattering scheme, where one high-intensity laser pulse is used for acceleration, compression and microbunching of the electron beam, and the other probe counter-streaming laser pulse is used for scattering with frequency up-shifting and amplitude enhancement.

scholarly journals Collimated proton beams by ultra-short, ultra-intense laser pulse interaction with a foil–ramparts target

2015 ◽  
Vol 33 (4) ◽  
pp. 765-771
Author(s):  
Huan Wang ◽  
Lihua Cao ◽  
X.T. He
Keyword(s):  
Energy Density ◽  
Laser Pulse ◽  
Electric Field ◽  
Proton Beam ◽  
Intense Laser ◽  
Three Dimension ◽  
Intense Laser Pulse ◽  
Proton Beams ◽  
Particle In Cell ◽  
Target Interaction

AbstractA foil–ramparts target interaction with an ultra-short, ultra-intense laser pulse (pulse duration between 10−12 and 10−15 s, intensity above 1018 W cm−2) to produce proton beams with controlled divergence and concentrated energy density in target normal sheath acceleration regime is studied. Two-dimension-in-space and three-dimension-in-velocity particle-in-cell simulations show that the foil–ramparts target helps to reshape the sheath electric field and generate a transverse quasi-static electric field of ~6.7 TV m−1 along the inner wall of the ramparts. The transverse electric field suppresses the transverse expansion of the proton beam effectively, as it tends to force the produced protons to focus inwards to the central axis, resulting in controlled divergence and concentrated energy density compared with that of a single plain target. The dependence of proton beam divergence on length of the rampart h is investigated in detail. A rough estimation of h ranges depending on dimensionless parameter a0 of the incident laser is also given.

scholarly journals Enhanced ion acceleration by collisionless electrostatic shock in thin foils irradiated by ultraintense laser pulse

2009 ◽  
Vol 27 (2) ◽  
pp. 327-333 ◽  
Author(s):  
M.-P. Liu ◽  
B.-S. Xie ◽  
Y.-S. Huang ◽  
J. Liu ◽  
M.Y. Yu
Keyword(s):  
Laser Pulse ◽  
Target Surface ◽  
Hot Electrons ◽  
Intense Laser ◽  
Ion Acceleration ◽  
Particle In Cell ◽  
Thin Foils ◽  
Spatially Extended ◽  
Cell Simulation ◽  
Induced Transparency

AbstractThe formation of collisionless electrostatic shock (CES) and ion acceleration in thin foils irradiated by intense laser pulse is investigated using particle-in-cell simulation. The CES can appear in the expanding plasma behind the foil when self-induced transparency occurs. The transmitting laser pulse can expel target-interior electrons, in addition to the electrons from the front target surface. The additional hot electrons lead to an enhanced and spatially-extended sheath field behind the foil. As the CES propagates in the plasma, it also continuously forward-reflects many of the upstream ions to higher energies. The latter ions are further accelerated by the enhanced sheath field and can overtake and shield the target-normal sheath accelerated ions. The energy gain of the CES accelerated ions can thus be considerably higher than that of the latter.

Reduction of the Coherence Time of an Intense Laser Pulse Propagating through a Plasma

2002 ◽  
Vol 88 (19) ◽  
Author(s):  
J. Fuchs ◽  
C. Labaune ◽  
H. Bandulet ◽  
P. Michel ◽  
S. Depierreux ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Coherence Time ◽  
Intense Laser ◽  
Intense Laser Pulse

scholarly journals Focusing of intense laser pulse by a hollow cone

2010 ◽  
Vol 28 (2) ◽  
pp. 293-298 ◽  
Author(s):  
Wei Yu ◽  
Lihua Cao ◽  
M.Y. Yu ◽  
A.L. Lei ◽  
Z.M. Sheng ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Strong Field ◽  
High Energy ◽  
Plasma Boundary ◽  
High Energy Density ◽  
Intense Laser ◽  
Intense Laser Pulse ◽  
Hollow Cone ◽  
Conical Channel ◽  
Boundary Plasma

AbstractIt is shown that an intense laser pulse can be focused by a conical channel. This anomalous light focusing can be attributed to a hitherto ignored effect in nonlinear optics, namely that the boundary response depends on the light intensity: the inner cone surface is ionized and the laser pulse is in turn modified by the resulting boundary plasma. The interaction creates a new self-consistently evolving light-plasma boundary, which greatly reduces reflection and enhances forward propagation of the light pulse. The hollow cone can thus be used for attaining extremely high light intensities for applications in strong-field and high energy-density physics and other areas.

scholarly journals Post-transient relaxation in graphene after an intense laser pulse

2013 ◽  
Vol 222 (5) ◽  
pp. 1263-1270 ◽  
Author(s):  
J. Zhang ◽  
T. Li ◽  
J. Wang ◽  
J. Schmalian
Keyword(s):  
Laser Pulse ◽  
Intense Laser ◽  
Intense Laser Pulse ◽  
Transient Relaxation

Characterization of ultra-intense laser in radiation damping regime using ponderomotive scattering

2022 ◽  
Author(s):  
Amol Holkundkar ◽  
Felix Mackenroth
Keyword(s):  
Laser Pulse ◽  
Electron Bunch ◽  
Input Parameter ◽  
Radiation Reaction ◽  
Quantitative Agreement ◽  
Intense Laser ◽  
Intense Laser Pulse ◽  
Scattered Electron ◽  
Novel Approach ◽  
Particle Simulations

Abstract We present a novel approach to analyzing phase-space distributions of electrons ponderomotively scattered off an ultra-intense laser pulse and comment on implications for thus conceivable in-situ laser-characterization schemes. To this end, we present fully relativistic test particle simulations of electrons scattered from an ultra-intense, counter-propagating laser pulse. The simulations unveil non-trivial scalings of the scattered electron distribution with the laser intensity, pulse duration, beam waist, and energy of the electron bunch. We quantify the found scalings by means of an analytical expression for the scattering angle of an electron bunch ponderomotively scattered from a counter-propagating, ultra-intense laser pulse, also accounting for radiation reaction (RR) through the Landau-Lifshitz (LL) model. For various laser and bunch parameters, the derived formula is in excellent quantitative agreement with the simulations. We also demonstrate how in the radiation-dominated regime a simple re-scaling of our model's input parameter yields quantitative agreement with numerical simulations based on the LL model.

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