Coherently enhanced electromagnetic pulses from midinfrared-driven laser plasmas

2020 ◽  
Author(s):  
Alexander Mitrofanov ◽  
Dmitry Sidorov-Biryukov ◽  
Maxim Nazarov ◽  
Alexander Voronin ◽  
Mikhail Rozhko ◽  
...  
Keyword(s):  
Electromagnetic Pulses ◽  
Laser Plasmas

Evolution of linearly polarized electromagnetic pulses in laser plasmas

2008 ◽  
Vol 15 (9) ◽  
pp. 093108 ◽  
Author(s):  
J. Borhanian ◽  
S. Sobhanian ◽  
I. Kourakis ◽  
A. Esfandyari-Kalejahi
Keyword(s):  
Electromagnetic Pulses ◽  
Laser Plasmas ◽  
Linearly Polarized

Diagnostics of Gold Laser Plasmas

1988 ◽  
Vol 102 ◽  
pp. 357-360
Author(s):  
J.C. Gauthier ◽  
J.P. Geindre ◽  
P. Monier ◽  
C. Chenais-Popovics ◽  
N. Tragin ◽  
...  
Keyword(s):  
Experimental Results ◽  
Pure Gold ◽  
Electronic Temperature ◽  
X Ray ◽  
Laser Plasmas ◽  
Collisional Radiative Model ◽  
Radiative Model

AbstractIn order to achieve a nickel-like X ray laser scheme we need a tool to determine the parameters which characterise the high-Z plasma. The aim of this work is to study gold laser plasmas and to compare experimental results to a collisional-radiative model which describes nickel-like ions. The electronic temperature and density are measured by the emission of an aluminium tracer. They are compared to the predictions of the nickel-like model for pure gold. The results show that the density and temperature can be estimated in a pure gold plasma.

Natural ELF Electromagnetic Pulses

1997 ◽  
Vol 51 (1) ◽  
pp. 25-34 ◽  
Author(s):  
Alexander P. Nikolaenko
Keyword(s):  
Electromagnetic Pulses

scholarly journals Feasibility Study on the Development of a Deployable Tactical EMP Tent for a Sustainable Military Facility

2020 ◽  
Vol 13 (1) ◽  
pp. 16
Author(s):  
Kukjoo Kim ◽  
Kyung-Ryeung Min ◽  
Young-Jun Park
Keyword(s):  
Korean Peninsula ◽  
Military Operations ◽  
Shielding Effectiveness ◽  
Electromagnetic Pulses ◽  
Fixed Weight ◽  
Operational Readiness ◽  
The Military ◽  
Transaction Price ◽  
Delphi Analysis ◽  
Weight Structures

The Korean peninsula is under increasing threat of electromagnetic pulses (EMPs) from neighboring countries; EMP protection facilities are an essential means of ensuring the operational readiness of the military. However, existing EMP protection facilities are manufactured as fixed-weight structures, which limit the mobility of military operations and lead to the misconception of EMP protection as something only required for higher command. The current military and official EMP protection standards require only a uniform shielding effectiveness of 80 dB. Therefore, this study aims to differentiate the existing uniform level of shielding effectiveness of 80 dB into 80 dB, 60 dB, 40 dB, etc. Further, it seeks to derive the factors to be considered when applying various methods, such as shielding rooms, shielding racks, site redundancy, spare equipment, and portable lightweight protective tents, for recovery of failure, instead of the existing protection facilities that rely on shielded rooms by the Delphi analysis. Then, the applicability of lightweight EMP protection is determined after selecting lightweight materials to build a facility. The electromagnetic shielding performance of 21 types of materials was measured in the 30 MHz–1.5 GHz frequency band using ASTM-D-4935-10. The results showed the possibility of developing a lightweight EMP shielding facility, which would save approximately 316,386 tons of concrete, reducing the CO2 emissions by approximately 9,972,489 tons. Assuming that the Korean carbon transaction price is USD 50/ton CO2, the savings are equivalent to USD 49,862,435.

scholarly journals Spectroscopic Studies of Laser-Based Far-Ultraviolet Plasma Light Source

2021 ◽  
Vol 11 (15) ◽  
pp. 6919
Author(s):  
Majid Masnavi ◽  
Martin Richardson
Keyword(s):  
Dense Plasma ◽  
Wavelength Region ◽  
Spectroscopic Studies ◽  
Radiation Hydrodynamics ◽  
Full Width ◽  
Half Maximum ◽  
Laser Plasmas ◽  
Series Of Experiments ◽  
Far Ultraviolet ◽  
Radiation Conversion

A series of experiments is described which were conducted to measure the absolute spectral irradiances of laser plasmas created from metal targets over the wavelength region of 123–164 nm by two separate 1.0 μm lasers, i.e., using 100 Hz, 10 ns, 2–20 kHz, 60–100 ns full-width-at-half-maximum pulses. A maximum radiation conversion efficiency of ≈ 3%/2πsr is measured over a wavelength region from ≈ 125 to 160 nm. A developed collisional-radiative solver and radiation-hydrodynamics simulations in comparison to the spectra detected by the Seya–Namioka-type monochromator reveal the strong broadband experimental radiations which mainly originate from bound–bound transitions of low-ionized charges superimposed on a strong continuum from a dense plasma with an electron temperature of less than 10 eV.

scholarly journals Mitigation of strong electromagnetic pulses on the LMJ-PETAL facility

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
M. Bardon ◽  
B. Etchessahar ◽  
F. Lubrano ◽  
S. Bazzoli ◽  
M. Ferri ◽  
...  
Keyword(s):  
Electromagnetic Pulses

scholarly journals Laser-plasmas in the relativistic-transparency regime: Science and applications

2017 ◽  
Vol 24 (5) ◽  
pp. 056702 ◽  
Author(s):  
Juan C. Fernández ◽  
D. Cort Gautier ◽  
Chengkung Huang ◽  
Sasikumar Palaniyappan ◽  
Brian J. Albright ◽  
...  
Keyword(s):  
Laser Plasmas
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