Numerical modeling of artificial ionospheric layers driven by high-power HF heating

2012 ◽  
Vol 117 (A10) ◽  
pp. n/a-n/a ◽  
Author(s):  
B. Eliasson ◽  
X. Shao ◽  
G. Milikh ◽  
E. V. Mishin ◽  
K. Papadopoulos
Keyword(s):  
Numerical Modeling ◽  
High Power ◽  
Hf Heating

Experimental study and numerical modeling of micro-channel cooler with micro-pipes for high-power diode laser arrays

2015 ◽  
Vol 91 ◽  
pp. 279-287 ◽  
Author(s):  
Anna Kozłowska ◽  
Piotr Łapka ◽  
Mirosław Seredyński ◽  
Marian Teodorczyk ◽  
Elżbieta Dąbrowska-Tumańska
Keyword(s):  
Experimental Study ◽  
Numerical Modeling ◽  
Diode Laser ◽  
High Power ◽  
Micro Channel ◽  
Laser Arrays ◽  
Power Diode ◽  
High Power Diode Laser

scholarly journals A coupled ionosphere-raytrace model for high-power HF heating

2015 ◽  
Vol 42 (22) ◽  
pp. 9650-9656 ◽  
Author(s):  
K. A. Zawdie ◽  
J. D. Huba ◽  
D. P. Drob ◽  
P. A. Bernhardt
Keyword(s):  
High Power ◽  
Hf Heating

Numerical modeling of high-power self-organizing external cavity lasers

2008 ◽  
Vol 40 (14-15) ◽  
pp. 1117-1121 ◽  
Author(s):  
Z. Zhang ◽  
G. Pauliat ◽  
J. J. Lim ◽  
P. J. Bream ◽  
N. Dubreuil ◽  
...  
Keyword(s):  
Numerical Modeling ◽  
High Power ◽  
External Cavity ◽  
External Cavity Lasers ◽  
Cavity Lasers ◽  
Self Organizing

scholarly journals Numerical modeling of MgB2 conductors for high power AC transmission

2014 ◽  
Vol 504 ◽  
pp. 167-171 ◽  
Author(s):  
F. Grilli ◽  
A. Chervyakov ◽  
V. Zermeno ◽  
A. Marian ◽  
G. Grasso ◽  
...  
Keyword(s):  
Numerical Modeling ◽  
High Power ◽  
Ac Transmission

scholarly journals Incidence angle dependence of Langmuir turbulence and artificial ionospheric layers driven by high-power HF-heating

2014 ◽  
Vol 81 (2) ◽  
Author(s):  
B. Eliasson ◽  
G. Milikh ◽  
X. Shao ◽  
E. V. Mishin ◽  
K. Papadopoulos
Keyword(s):  
High Power ◽  
Incidence Angle ◽  
Beam Width ◽  
Electron Acceleration ◽  
Langmuir Turbulence ◽  
Ionospheric Heating ◽  
Turbulent Layer ◽  
Neutral Gas ◽  
Radio Transmitters ◽  
Hf Heating

We have numerically investigated the development of strong Langmuir turbulence (SLT) and associated electron acceleration at different angles of incidence of ordinary (O) mode pump waves. For angles of incidence within the Spitze cone, the turbulence initially develops within the first maximum of the Airy pattern near the plasma resonance altitude. After a few milliseconds, the turbulent layer shifts downwards by about 1 km. For injections outside the Spitze region, the turning point of the pump wave is at lower altitudes. Yet, an Airy-like pattern forms here, and the turbulence development is quite similar to that for injections within the Spitze. SLT leads to the acceleration of 10–20 eV electrons that ionize the neutral gas thereby creating artificial ionospheric layers. Our numerical modeling shows that most efficient electron acceleration and ionization occur at angles between the magnetic and geographic zenith, where SLT dominates over weak turbulence. Possible effects of the focusing of the electromagnetic beam on magnetic field-aligned density irregularities and the finite heating beam width at the magnetic zenith are also discussed. The results have relevance to ionospheric heating experiments using ground-based, high-power radio transmitters to heat the overhead plasma, where recent observations of artificial ionization layers have been made.

Numerical modeling of the space–time structure of a high-power laser beam

1991 ◽  
Vol 21 (9) ◽  
pp. 1012-1015
Author(s):  
Aleksandr A Andreev ◽  
P I Krepostnov ◽  
A N Sutyagin ◽  
A N Shatsev
Keyword(s):  
Numerical Modeling ◽  
Laser Beam ◽  
High Power ◽  
Space Time ◽  
Time Structure ◽  
High Power Laser ◽  
Power Laser ◽  
Space Time Structure
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