scholarly journals Creation of an axially uniform plasma channel in a laser-assisted capillary discharge

2021 ◽  
Vol 28 (5) ◽  
pp. 053104
Author(s):  
G. A. Bagdasarov ◽  
N. A. Bobrova ◽  
O. G. Olkhovskaya ◽  
V. A. Gasilov ◽  
C. Benedetti ◽  
...  
Keyword(s):  
Plasma Channel ◽  
Capillary Discharge ◽  
Uniform Plasma

scholarly journals Dynamics of the spectral behaviour of an ultrashort laser pulse in an argon-gas-filled capillary discharge-preformed plasma channel

2013 ◽  
Vol 59 ◽  
pp. 17002
Author(s):  
S. Sakai ◽  
T. Higashiguchi ◽  
N. Yugami ◽  
N. Bobrova ◽  
Y. Sentoku ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Ultrashort Laser Pulse ◽  
Plasma Channel ◽  
Capillary Discharge ◽  
Argon Gas ◽  
Spectral Behaviour ◽  
Preformed Plasma ◽  
Ultrashort Laser

0.56 GeV Laser Electron Acceleration in Ablative-Capillary-Discharge Plasma Channel

2008 ◽  
Vol 1 ◽  
pp. 066001 ◽  
Author(s):  
Takashi Kameshima ◽  
Wei Hong ◽  
Kiyohiro Sugiyama ◽  
Xianlun Wen ◽  
Yuchi Wu ◽  
...  
Keyword(s):  
Discharge Plasma ◽  
Plasma Channel ◽  
Electron Acceleration ◽  
Capillary Discharge

scholarly journals Relativistic guidance of an intense laser beam through an axially non-uniform plasma channel

2011 ◽  
Vol 29 (3) ◽  
pp. 291-298 ◽  
Author(s):  
Arvinder Singh ◽  
Navpreet Singh
Keyword(s):  
Laser Pulse ◽  
Laser Beam ◽  
Plasma Channel ◽  
Nonlinear Differential Equations ◽  
Beam Width ◽  
Intense Laser ◽  
Theory Approach ◽  
Laser Guidance ◽  
Moment Theory ◽  
Uniform Plasma

AbstractThe effect of relativistic nonlinearity on the guiding of a laser beam in a plasma channel formed by a short ionizing pulse is investigated. The plasma channel formed is axially non-uniform due to self defocusing of the prepulse. When a second delayed laser pulse propagates through the plasma channel formed by the prepulse, the competition between refraction and diffraction results into alternate convergence and divergence of the guided beam. Second-order nonlinear differential equations for the beam width parameter of the prepulse and guided pulse are derived by moment theory approach. The effect of the guided pulse intensities as well as the axial nonuniformity of the plasma channel on the propagation of the guided laser pulse has been investigated. Relativistic laser guidance up to several Rayleigh lengths is observed.

scholarly journals Plasma parameters of a capillary discharge-produced plasma channel to guide an intense laser pulse

2010 ◽  
Vol 244 (2) ◽  
pp. 022068
Author(s):  
Hiromitsu Terauchi ◽  
Jin-xiang Bai ◽  
Takeshi Higashiguchi ◽  
Noboru Yugami ◽  
Toyohiko Yatagai ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Plasma Channel ◽  
Capillary Discharge ◽  
Intense Laser ◽  
Intense Laser Pulse ◽  
Plasma Parameters

Guiding of a laser beam in collisional magnetoplasma channel

2012 ◽  
Vol 78 (3) ◽  
pp. 249-257
Author(s):  
ARVINDER SINGH ◽  
NAVPREET SINGH
Keyword(s):  
Laser Beam ◽  
Plasma Channel ◽  
Beam Width ◽  
Theory Approach ◽  
Uniform Heating ◽  
Laser Guiding ◽  
Set Up ◽  
The Moment ◽  
Preformed Plasma ◽  
Uniform Plasma

AbstractLaser guiding through an axially non-uniform collisional magnetoplasma channel formed by ionizing laser prepulse has been investigated. Self-defocusing of the ionizing prepulse leads to an axial non-uniform plasma channel. Due to the propagation of second laser beam through such preformed plasma channel, non-uniform heating of electrons takes place on account of non-uniform intensity distribution of laser beam. Non-uniform heating diffuses the electrons away from the axis and thereby enhances the plasma channel. Due to the competition between diffraction and refraction phenomenon through such an axial non-uniform collisional magnetoplasma channel, there is a periodic beam width variation with the distance of propagation. Second order ordinary differential equations for the beam width parameter of prepulse and the guided beam have been set up using the moment theory approach. Effect of axial non-uniformity, intensity of guided beam and magnetic field has been seen on the propagation of the second guided beam in the plasma channel.

Plasma Parameter of a Capillary Discharge-Produced Plasma Channel to Guide an Ultrashort Laser Pulse

2009 ◽  
Author(s):  
Takeshi Higashiguchi ◽  
Hiromitsu Terauchi ◽  
Jin-xiang Bai ◽  
Noboru Yugami ◽  
Carl B. Schroeder ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Ultrashort Laser Pulse ◽  
Plasma Parameter ◽  
Plasma Channel ◽  
Capillary Discharge ◽  
Ultrashort Laser

scholarly journals Relativistic and ponderomotive effects on evolution of laser beam in a non-uniform plasma channel

2010 ◽  
Vol 28 (1) ◽  
pp. 11-20 ◽  
Author(s):  
T.S. Gill ◽  
R. Mahajan ◽  
R. Kaur
Keyword(s):  
Laser Beam ◽  
Phase Modulation ◽  
Plasma Channel ◽  
Parabolic Partial Differential Equation ◽  
Nonlinear Phenomena ◽  
Complex Envelope ◽  
Self Focusing ◽  
Nonlinear Parabolic ◽  
The Stability ◽  
Uniform Plasma

AbstractThe nonlinear parabolic partial differential equation governing the evolution of the complex envelope in the slowly varying envelope approximation is solved using the variational approach. The basic nonlinear phenomena of relativistic and ponderomotive self-focusing in a plasma channel are taken into account. Self-focusing, self-phase modulation as well as self-trapping of laser beam is studied in a variety of situations. Further, in the absence of dissipation mechanisms, the stability of the beam is also studied.

scholarly journals Laser wakefield bubble regime acceleration of electrons in a preformed non uniform plasma channel

2012 ◽  
Vol 30 (4) ◽  
pp. 575-582 ◽  
Author(s):  
K.K. Magesh Kumar ◽  
V.K. Tripathi
Keyword(s):  
Laser Pulse ◽  
Space Charge ◽  
Plasma Channel ◽  
Intense Laser ◽  
Intense Laser Pulse ◽  
High Energies ◽  
Test Electron ◽  
Laser Wakefield ◽  
Bubble Regime ◽  
Uniform Plasma

AbstractA model of bubble regime electron acceleration by an intense laser pulse in non uniform plasma channel is developed. The plasma electrons at the front of the pulse and slightly off the laser axis in the plasma channel, experience axial and radial ponderomotive and space charge forces, creating an electron evacuated non uniform ion bubble. The expelled electrons travel along the surface of the bubble and reach the stagnation point, forming an electron sphere of radius re. The electrons of this sphere are pulled into the ion bubble and are accelerated to high energies. The Lorentz boosted frame enabled us to calculate energy gain of a test electron inside the bubble.

scholarly journals Laser-heater assisted plasma channel formation in capillary discharge waveguides

2013 ◽  
Vol 20 (2) ◽  
pp. 020703 ◽  
Author(s):  
N. A. Bobrova ◽  
P. V. Sasorov ◽  
C. Benedetti ◽  
S. S. Bulanov ◽  
C. G. R. Geddes ◽  
...  
Keyword(s):  
Plasma Channel ◽  
Capillary Discharge ◽  
Channel Formation ◽  
Laser Heater
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