Plasma expansion and relativistic filamentation in intense laser-irradiated cone targets

2021 ◽  
Vol 28 (11) ◽  
pp. 113106
Author(s):  
G. E. Cochran ◽  
A. J. Kemp ◽  
S. C. Wilks ◽  
S. M. Kerr ◽  
G. J. Williams ◽  
...  
Keyword(s):  
Intense Laser ◽  
Plasma Expansion

Cairns-Gurevich equation for soliton in plasma expansion into vacuum

2015 ◽  
Vol 81 (3) ◽  
Author(s):  
K. Annou ◽  
D. Bara ◽  
D. Bennaceur-Doumaz
Keyword(s):  
Distribution Function ◽  
Nonlinear Waves ◽  
Acoustic Waves ◽  
Vries Equation ◽  
Intense Laser ◽  
Plasma Expansion ◽  
Laboratory Plasma ◽  
Ion Acoustic Waves ◽  
Trapped Particles ◽  
Nonlinear Acoustic

Plasma expansion and soliton formation in laser created plasma are addressed. Nonlinear acoustic waves in plasma where the combined effect of trapped and non-thermal electrons are dealt with, in plasma expansion are studied. Using the perturbation method, a modified Korteweg–de Vries equation (mKdV) that describes how the ion acoustic waves (IAW) are derived. The plasma is modeled by a Cairns distribution function for non-thermal electrons combined with Gurevich distribution function for the trapped electrons. It is found that parameters taken into account have significant effects on the properties of nonlinear waves as well as on plasma expansion into vacuum. We point out, that this work has been motivated by space and laboratory plasma observations of plasmas containing energetic particles, combined with trapped particles. Furthermore, this study is of interest in the context of the investigation of mono-energetic ion beams from intense laser interactions with plasmas.

scholarly journals Generation of pre-formed plasma and its reduction for fast-ignition

2012 ◽  
Vol 30 (1) ◽  
pp. 95-102 ◽  
Author(s):  
Atsushi Sunahara ◽  
Tomoyuki Johzaki ◽  
Hideo Nagatomo ◽  
Kunioki Mima
Keyword(s):  
Inertial Confinement Fusion ◽  
Arrival Time ◽  
Critical Density ◽  
Fast Ignition ◽  
Intense Laser ◽  
Inertial Confinement ◽  
Plasma Expansion ◽  
Hydrodynamic Simulations ◽  
Confinement Fusion ◽  
Cone Target

AbstractWe investigated generation of pre-formed plasma on plates and inside cone targets due to a pre-pulse before the arrival of the main ultra-intense laser pulse in the fast-ignition scheme of the inertial confinement fusion. We estimated the pre-pulse level to be 130 mJ for LFEX laser used in the 2009 FIREX experiment, and the density gradient scale length of the pre-formed plasma inside the cone target to be 27–47 microns between the critical and 1/10 of the critical density, based on the two-dimensional radiation hydrodynamic simulations. In order to reduce the generation of pre-formed plasma, we investigated a thin CH foil pre-pulse absorber, and proposed using a cone target with a pointed tip. We simulated CH plasma expansion to show that the CH foils works as a pre-pulse absorber. We also show the aluminum pointed tip of the cone target can delay the shock arrival time by 20 ps, much longer than the delay for the 10 micron thickness gold tip used in the typical implosion of GXII at Osaka University.

scholarly journals Hotter electrons and ions from nano-structured surfaces

2008 ◽  
Vol 26 (2) ◽  
pp. 259-264 ◽  
Author(s):  
S. Bagchi ◽  
P. Prem Kiran ◽  
M.K. Bhuyan ◽  
S. Bose ◽  
P. Ayyub ◽  
...  
Keyword(s):  
Average Energy ◽  
Intense Laser ◽  
Plasma Expansion ◽  
Structured Surfaces ◽  
Particle Generation ◽  
Structured Surface ◽  
Expansion Mechanism ◽  
Electrons And Ions ◽  
The Impact ◽  
Present Understanding

AbstractThe impact of nano-structured surfaces on particle generation from ultrashort intense laser produced plasmas is presented over an intensity range of 1015–1017 Wcm−2. The nano-structured surface evidently produces hotter plasma but does not lead to the generation of hotter ions, a counterintuitive result based on present understanding of plasma expansion mechanism. Although the total ion flux and energy is more in the case of structured surfaces, the average energy of the projectiles is found to be lower than that from polished surfaces. The nano-structured surface shows preferential enhancement of lower energy ions and an intensity dependent divergence of the ejected particles.

Atoms in Intense Laser Fields

2009 ◽  
Author(s):  
C. J. Joachain ◽  
N. J. Kylstra ◽  
R. M. Potvliege
Keyword(s):  
Intense Laser ◽  
Intense Laser Fields ◽  
Laser Fields

Laser-matter interaction in intense laser fields

1993 ◽  
Vol 90 ◽  
pp. 1275-1282 ◽  
Author(s):  
LA Lompré ◽  
P Monot ◽  
T Auguste ◽  
G Mainfray ◽  
C Manus
Keyword(s):  
Intense Laser ◽  
Intense Laser Fields ◽  
Laser Fields ◽  
Matter Interaction

Control of proton beam divergence in intense-laser foil-plasma interaction

2006 ◽  
Vol 133 ◽  
pp. 549-551 ◽  
Author(s):  
S. Kawata ◽  
R. Sonobe ◽  
S. Miyazaki ◽  
K. Sakai ◽  
T. Kikuchi
Keyword(s):  
Proton Beam ◽  
Beam Divergence ◽  
Intense Laser ◽  
Plasma Interaction

Dynamics of overdense plasma interacting with ultrashort intense laser and consideration on neutron yield

2006 ◽  
Vol 133 ◽  
pp. 515-519
Author(s):  
Y. Rhee ◽  
S. M. Nam ◽  
J. M. Han ◽  
Y. H. Cha ◽  
D. H. Kwon ◽  
...  
Keyword(s):  
Neutron Yield ◽  
Intense Laser ◽  
Overdense Plasma

LUMINESCENCE DE CuCl EXCITÉE PAR UNE SOURCE INTENSE (LASER)

1966 ◽  
Vol 27 (C2) ◽  
pp. C2-100-C2-103 ◽  
Author(s):  
J.-B. GRUN ◽  
A. MYSYROWICZ ◽  
S. NIKITINE
Keyword(s):  
Intense Laser
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