plasmaThere have been many significant experimental and theoretical advances recently with regard to the production of relativistic electron beams using laser wakefield accelerators (LWFA) driven by high power short pulse lasers. In particular, there has been an explosion of interest in this field ...
Laser plasma acceleration opens up interesting perspectives. Compared to conventional accelerators, it holds the promise of more compact, more energy-efficient facilities – because instead of employing powerful radio waves to get particles moving, the new technology uses lasers to accelerate them. The ...
Using one-dimensional particle-in-cell simulations, we observed the formation of solitons which can move with high group velocities when ultrashort laser pulses at a few cycles only propagate in underdense plasma near the critical density. There exist reflection and transmission when the solitons arr...
where Nj is the population density of level j, Aji is the spontaneous decay rate from level j to level i, Cjie is the electron collisional excitation rate coefficient, Cjid is the electron collisional de-excitation rate coefficient, and Ne is the plasma electron density. The gain coefficient...
Characterization of the plasma mirror system at the J-KAREN-P facility. High Power Laser Sci. Eng. 2022, 10, e25. [Google Scholar] [CrossRef] Tournois, P. Acousto-optic programmable dispersive filter for adaptive compensation of group delay time dispersion in laser systems. Opt. Commun. ...
the pulse terminates before the completion of energy transfer from photoexcited electrons or electron-hole plasma to the lattice, which minimizes thermal effects during machining and makes the process clean [76–84], specifically when only a single pulse is involved. Using these features, a large ...
Monoenergetic beams of relativistic electrons from intense laser-plasma interactions. Nature 431, 535–538. https://doi.org/10.1038/nature02939 (2004). Article ADS CAS PubMed Google Scholar Geddes, C. G. R. et al. High-quality electron beams from a laser wakefield accelerator using plasma-ch...
Clearly the oscillating phase of the plasma mirror is related with its azimuthal angle. In Fig. 1d, we plot the electron current in the z direction, Jz, for a fixed z position but at different times. The current Jz is directly related to the oscillation velocity vz of the plasma mirror....
the keyhole, the fluctuations in plasma temperature and density over time in the welding process of the first group of parameters are relatively large, while the fluctuations in plasma temperature and density over time in the welding process of the second group of parameters are relatively stable....
Diode laser based optical diagnostics are considered ideal for non-intrusive in-situ determination of densities of micro/nano-structures and temperature measurements of important plasma species that are responsible for the fabrication or functionalization of devices and detection of damaging contaminants. A...