Investigation of characteristic x-rays and hot-electron temperature in the interaction of normally incident femtosecond laser pulses with nanostructured foils

2014 ◽  
Vol 89 (7) ◽  
pp. 075605 ◽  
Author(s):  
O F Kostenko ◽  
A V Ovchinnokov ◽  
O V Chefonov ◽  
S A Romashevskiy ◽  
V P Petrovskiy ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Electron Temperature ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
X Rays ◽  
Hot Electron

scholarly journals Generation of coherent keV x-rays with intense femtosecond laser pulses

2006 ◽  
Vol 8 (10) ◽  
pp. 251-251 ◽  
Author(s):  
J Seres ◽  
P Wobrauschek ◽  
Ch Streli ◽  
V S Yakovlev ◽  
E Seres ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
X Rays

scholarly journals Characteristic X-rays generation under the action of femtosecond laser pulses on nano-structured targets

2011 ◽  
Vol 29 (2) ◽  
pp. 249-254 ◽  
Author(s):  
A.V. Ovchinnikov ◽  
O.F. Kostenko ◽  
O.V. Chefonov ◽  
O.N. Rosmej ◽  
N.E. Andreev ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Line Emission ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Relative Increase ◽  
Metal Foil ◽  
X Rays ◽  
Fast Electrons ◽  
X Ray ◽  
Vacuum Heating

AbstractEnhancement of Kα yield from a metal foil covered with metal rods of submicron sizes, with low aspect ratio, irradiated by a p-polarized femtosecond laser pulses of about 1017 W/cm2 intensity is demonstrated. Obtained relative increase in Kα X-ray line emission is explained with a model of vacuum heating of fast electrons.

scholarly journals Characterization of X-ray radiation from solid Sn target irradiated by femtosecond laser pulses in the presence of air plasma sparks

2016 ◽  
Vol 34 (3) ◽  
pp. 533-538 ◽  
Author(s):  
A. Curcio ◽  
M. Anania ◽  
F.G. Bisesto ◽  
A. Faenov ◽  
M. Ferrario ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Near Infrared ◽  
Laser Energy ◽  
Laser System ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
X Rays ◽  
Air Plasma ◽  
X Ray ◽  
Near Infrared Spectra

AbstractThe emission of X-rays from solid tin targets irradiated by low-energy (few mJ) femtosecond laser pulses propagated through air plasma sparks is investigated. The aim is that to better understand the X-ray emission mechanism and to show the possibility to produce proper radiation for spectroscopic and imaging applications with a table-top laser system. The utilization of a controlled ultrashort prepulse is found necessary to optimize the conversion efficiency of laser energy into Lα radiation. The optimum contrast between the main pulse and the controlled prepulse is found about 102. A correlation between the laser contrast value and the laser near-infrared spectra at the exit of the plasma spark is observed.

Hot-electron influence onL-shell spectra of multicharged Kr ions generated in clusters irradiated by femtosecond laser pulses

2002 ◽  
Vol 66 (4) ◽  
Author(s):  
S. B. Hansen ◽  
A. S. Shlyaptseva ◽  
A. Y. Faenov ◽  
I. Y. Skobelev ◽  
A. I. Magunov ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Hot Electron

scholarly journals Non-Fourier Estimate of Electron Temperature in Case of Femtosecond Laser Pulses Interaction with Metals

Metals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 606 ◽  
Author(s):  
Anca M. Bucă ◽  
Mihai Oane ◽  
Muhammad Arif Mahmood ◽  
Ion N. Mihăilescu ◽  
Andrei C. Popescu ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Femtosecond Laser ◽  
Electron Temperature ◽  
Relaxation Times ◽  
Gold Surface ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
New Approach ◽  
Thermal Fields ◽  
Coupling Factors

This work is devoted to the electron temperature variation in metals through interaction with femtosecond laser pulses. Our study was inspired by the last mathematical breakthroughs regarding the exact analytical solutions of the heat equation in the case of flash laser-matter interaction. To this purpose, the classical Anisimov’s two temperature model was extended via the 3D telegraph Zhukovsky equation. Based upon this new approach, the computational plots of electron thermal fields during the first laser pulse interaction with a gold surface were inferred. It is shown that relaxation times and coupling factors over electron thermal conductivities (g/K) govern the interaction between the laser pulse and metal sample during the first picoseconds. The lower the factor g/K, the higher the electron temperature becomes. In contrast, the lower the relaxation time, the lower the electron temperature.

Hot electron generation in a dense plasma by femtosecond laser pulses of subrelativistic intensity

2009 ◽  
Vol 39 (7) ◽  
pp. 669-674 ◽  
Author(s):  
V V Bolshakov ◽  
A A Vorob'ev ◽  
D S Uryupina ◽  
K A Ivanov ◽  
Nader Morshedian ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Dense Plasma ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Hot Electron ◽  
Electron Generation

Effect of hot electron kinetics on self-reflectivity of warm dense gold irradiated with femtosecond laser pulses

2021 ◽  
pp. 150073
Author(s):  
Minju Kim ◽  
Jae Hyung Jung ◽  
Seong Hyeok Yang ◽  
Min Sang Cho ◽  
Gyeongbo Kang ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Hot Electron ◽  
Electron Kinetics
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