Parametric study of ion acceleration in a one-dimensional plasma expansion using the particle-in-cell simulation

2004 ◽  
Vol 69 (5) ◽  
Author(s):  
Tudor Nedelea ◽  
Herbert M. Urbassek
Keyword(s):  
Parametric Study ◽  
Ion Acceleration ◽  
Plasma Expansion ◽  
One Dimensional ◽  
Particle In Cell ◽  
Cell Simulation

Formation of an inverted sheath in a one-dimensional bounded plasma system studied by particle-in-cell simulation

2021 ◽  
Vol 28 (12) ◽  
pp. 123507
Author(s):  
T. Gyergyek ◽  
S. Costea ◽  
K. Bajt ◽  
A. Valič ◽  
J. Kovačič
Keyword(s):  
Plasma System ◽  
One Dimensional ◽  
Particle In Cell ◽  
Bounded Plasma ◽  
Cell Simulation

scholarly journals Effect of pre-plasma on the ion acceleration by intense ultra-short laser pulses

2018 ◽  
Vol 36 (2) ◽  
pp. 226-231 ◽  
Author(s):  
Parvin Varmazyar ◽  
Saeed Mirzanejhad ◽  
Taghi Mohsenpour
Keyword(s):  
Laser Pulses ◽  
Complete Analysis ◽  
Ion Acceleration ◽  
Destructive Effect ◽  
Particle In Cell ◽  
Solid Density ◽  
Cell Simulation ◽  
Fs Laser ◽  
Short Laser Pulses ◽  
Plasma Effect

AbstractIn the interaction of short-laser pulses with a solid density target, pre-plasma can play a major role in ion acceleration processes. So far, complete analysis of pre-plasma effect on the ion acceleration by ultra-short laser pulses in the radiation pressure acceleration (RPA) regime has been unknown. Then the effect of pre-plasma on the ion acceleration efficiency is analyzed by numerical results of the particle-in-cell simulation in the RPA regime. It is shown that, for long-laser pulses (τp > 50 fs), the presence of pre-plasma makes a destructive effect on ion acceleration while it may have a contributing effect for short-laser pulses (τp < 50 fs). Therefore, the 35 fs (20 fs) laser pulse can accelerate ions up to 40 MeV (55 eV), which is almost two (three) times larger in energy rather than use of a 100 fs pulse with the same pre-plasma scale length.

One-dimensional particle-in-cell simulation of a current-free double layer in an expanding plasma

2005 ◽  
Vol 12 (5) ◽  
pp. 052317 ◽  
Author(s):  
Albert Meige ◽  
Rod W. Boswell ◽  
Christine Charles ◽  
Miles M. Turner
Keyword(s):  
Double Layer ◽  
One Dimensional ◽  
Particle In Cell ◽  
Cell Simulation ◽  
A Current

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.

BIFURCATION AND CHAOS IN THE SECOND OSCILLATORY WINDOW OF THE CLASSICAL PIERCE DIODE

2001 ◽  
Vol 11 (10) ◽  
pp. 2579-2586 ◽  
Author(s):  
J. J. BARROSO ◽  
M. O. TERRA ◽  
E. E. N. MACAU
Keyword(s):  
Virtual Cathode ◽  
Dynamical Behavior ◽  
One Dimensional ◽  
Particle In Cell ◽  
Subharmonic Bifurcations ◽  
Cell Simulation ◽  
Approximation Analysis ◽  
First Time ◽  
Operating Regimes ◽  
Monoenergetic Electron Beam

The second oscillatory window of the classical Pierce diode is explored by a particle-in-cell simulation, and for the first time, results that support the existence of another chaotic region are presented. The classical Pierce model consists of a one-dimensional plasma-filled diode into which a monoenergetic electron beam is injected. This system presents a rich dynamical behavior as a function of a single control parameter α (the electron transit angle) and has four different operating regimes: stable, oscillatory, chaotic and unstable oscillatory with virtual cathode formation. The second oscillatory region, revealed by linear approximation analysis, presents a similar dynamical behavior to the first one, studied by many works and located below α = 3π. By gradually diminishing α from 5π, we report here, through numerical experiments, the existence of a sequence of subharmonic bifurcations leading to chaos, periodic windows, and a crisis from which just unstable oscillations with virtual cathode can be observed.

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