scholarly journals Influence of flying mirror features and time delay between two counterpropagating laser pulses on the generated attosecond pulse intensity in near-critical density plasmas

AIP Advances ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 065133
Author(s):  
Hoda Moghadasin ◽  
Ali Reza Niknam ◽  
Davood Komaizi
Keyword(s):  
Time Delay ◽  
Critical Density ◽  
Laser Pulses ◽  
Attosecond Pulse ◽  
Pulse Intensity

Suppression of runaway electron generation by massive helium injection after induced disruptions on TEXTOR

2015 ◽  
Vol 81 (5) ◽  
Author(s):  
A. Lvovskiy ◽  
H. R. Koslowski ◽  
L. Zeng ◽  
Keyword(s):  
Time Delay ◽  
Runaway Electron ◽  
Critical Density ◽  
Runaway Electrons ◽  
Electron Generation ◽  
Disruption Mitigation ◽  
Order Of Magnitude ◽  
Short Time ◽  
Short Time Delay

Disruptions with runaway electron generation have been deliberately induced by injection of argon using a disruption mitigation valve. A second disruption mitigation valve has been utilised to inject varying amounts of helium after a short time delay. No generation of runaway electrons has been observed when more than a critical amount of helium has been injected no later than 5 ms after the triggering of the first valve. The required amount of helium for suppression of runaway electron generation is up to one order of magnitude lower than the critical density according to Connor & Hastie (1975) and Rosenbluth & Putvinski (1997).

Post-solitons and electron vortices generated by femtosecond intense laser interacting with uniform near-critical-density plasmas

2021 ◽  
Author(s):  
Dong-Ning Yue ◽  
Min Chen ◽  
Yao Zhao ◽  
Pan-Fei Geng ◽  
Xiao-Hui Yuan ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Critical Density ◽  
Laser Pulses ◽  
Intense Laser ◽  
Nonlinear Structures ◽  
Particle In Cell ◽  
Laser Propagation ◽  
Laser Driver ◽  
Linearly Polarized ◽  
Dimensional Simulation

Abstract Generation of nonlinear structures, such as stimulated Raman side scattering waves, post-solitons and electron vortices, during ultra-short intense laser pulse transportation in near-critical-density (NCD) plasmas are studied by using multi-dimensional particle-in-cell (PIC) simulations. In two-dimensional geometries, both P- and S- polarized laser pulses are used to drive these nonlinear structures and to check the polarization effects on them. In the S-polarized case, the scattered waves can be captured by surrounding plasmas leading to the generation of post-solitons, while the main pulse excites convective electric currents leading to the formation of electron vortices through Kelvin-Helmholtz instability (KHI). In the P-polarized case, the scattered waves dissipate their energy by heating surrounding plasmas. Electron vortices are excited due to the hosing instability of the drive laser. These polarization dependent physical processes are reproduced in two different planes perpendicular to the laser propagation direction in three-dimensional simulation with linearly polarized laser driver. The current work provides inspiration for future experiments of laser-NCD plasma interactions.

Observation of MeV-energy ions from the interaction of over picosecond laser pulses with near-critical density foam targets

2020 ◽  
Vol 36 ◽  
pp. 100821
Author(s):  
Satoru Shokita ◽  
Akifumi Yogo ◽  
Seyed R. Mirfayzi ◽  
Yuki Honoki ◽  
Daniil Golovin ◽  
...  
Keyword(s):  
Critical Density ◽  
Picosecond Laser ◽  
Laser Pulses ◽  
Picosecond Laser Pulses

Intensity Scalings of Attosecond Pulse Generation by the Relativistic-irradiance Laser Pulses

2007 ◽  
pp. 265-272 ◽  
Author(s):  
Alexander S. Pirozhkov ◽  
Sergei V. Bulanov ◽  
Timur Zh. Esirkepov ◽  
Akito Sagisaka ◽  
Toshiki Tajima ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Pulse Generation ◽  
Attosecond Pulse ◽  
Attosecond Pulse Generation

scholarly journals High-harmonic and single attosecond pulse generation using plasmonic field enhancement in ordered arrays of gold nanoparticles with chirped laser pulses

2013 ◽  
Vol 21 (2) ◽  
pp. 2195 ◽  
Author(s):  
Ying-Ying Yang ◽  
Armin Scrinzi ◽  
Anton Husakou ◽  
Qian-Guang Li ◽  
Sarah L. Stebbings ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
High Harmonic ◽  
Field Enhancement ◽  
Laser Pulses ◽  
Pulse Generation ◽  
Attosecond Pulse ◽  
Ordered Arrays ◽  
Attosecond Pulse Generation

Multiphoton time-delay spectroscopy using not transform-limited laser pulses

2000 ◽  
Vol 182 (1-3) ◽  
pp. 161-165 ◽  
Author(s):  
Stefano Cavalieri ◽  
Marzia Materazzi ◽  
Roberto Eramo ◽  
Lorenzo Fini ◽  
Andrea Giugni
Keyword(s):  
Time Delay ◽  
Laser Pulses
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