Results 11 to 20 of about 582,709 (287)

Controlling the characteristics of injected and accelerated electron bunch in corrugated plasma channel by temporally asymmetric laser pulses

open access: yesScientific Reports, 2022
In laser-driven plasma wakefield accelerators, the accelerating electric field is orders of magnitude stronger than in conventional radio-frequency particle accelerators, but the dephasing between the ultrarelativistic electron bunch and the wakefield ...
M. Sedaghat   +2 more
doaj   +1 more source

Laser and electron deflection from transverse asymmetries in laser-plasma accelerators. [PDF]

open access: yes, 2019
We report on the deflection of laser pulses and accelerated electrons in a laser-plasma accelerator (LPA) by the effects of laser pulse front tilt and transverse density gradients.
Benedetti, Carlo   +11 more
core   +1 more source

Laser wakefield and direct acceleration in the plasma bubble regime [PDF]

open access: yes, 2018
Laser wakefield acceleration (LWFA) and direct laser acceleration (DLA) are two different kinds of laser plasma electron acceleration mechanisms. LWFA relies on the laser-driven plasma wave to accelerate electrons.
Zhang, Xi, Ph. D.
core   +1 more source

Experimental observation of backscattered light based on different coherence between incident laser beams

open access: yesHigh Power Laser Science and Engineering, 2013
Recent experimental results on NIF revealed a much higher stimulated Brillouin scattering (SBS) and stimulated Raman scattering (SRS) backscatter than expected; one possible reason was due to the coherence between incident laser beams.
Xiangfu Meng   +5 more
doaj   +1 more source

Quasi-phase-matched laser wakefield acceleration of electrons in an axially density-modulated plasma channel

open access: yesScientific Reports, 2021
Quasi-phase matching in corrugated plasma channels has been proposed as a way to overcome the dephasing limitation in laser wakefield accelerators.
M. Sedaghat, S. Barzegar, A. R. Niknam
doaj   +1 more source

Laser irradiated foam targets: absorption and radiative properties [PDF]

open access: yes, 2018
An experimental campaign to characterize the laser radiation absorption of foam targets and the subsequent emission of radiation from the produced plasma was carried out in the ABC facility of the ENEA Research Center in Frascati (Rome).
Cipriani, Mattia   +10 more
core   +2 more sources

Three-Jet Powder Flow and Laser–Powder Interaction in Laser Melting Deposition: Modelling Versus Experimental Correlations

open access: yesMetals, 2020
Powder flow and temperature distribution are recognized as essential factors in the laser melting deposition (LMD) process, which affect not only the layer formation but also its characteristics.
Muhammad Arif Mahmood   +6 more
doaj   +1 more source

Surface Acoustic Wave Biosensor with Laser-Deposited Gold Layer Having Controlled Porosity

open access: yesChemosensors, 2021
Laser-deposited gold immobilization layers having different porosities were incorporated into love wave surface acoustic wave sensors (LW-SAWs). Variation of pulsed laser deposition parameters allows good control of the gold film morphology.
Dana Miu   +3 more
doaj   +1 more source

Plasma wave undulator for laser-accelerated electrons [PDF]

open access: yes, 2011
Laser-plasma accelerators have become compact sources of ultrashort electron bunches at energies up to the gigaelectronvolt range thanks to the remarkable progress made over the past decade.
Corde, S., Phuoc, K. Ta
core   +3 more sources

High-power laser shock-induced dynamic fracture of aluminum and microscopic observation of samples

open access: yesEPJ Web of Conferences, 2015
High-power laser induced shocks generated by “ShenGuang II” laser facility has been used to study spall fracture of polycrystalline aluminum at strain rates more than 106/s.
Fan Zhang   +10 more
doaj   +1 more source

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