Predicted Thermal Superluminescence in Low Pressure Air

Posted by on Jan 1, 2010 in Publications, Recent Work Section | 0 comments

A. R. Aramyan, K. P. Haroyan, G. A. Galechyan, N. R. Mangasaryan, H. B. Nersisyan Laser Physics, Volume 20, Number 6, pp. 1554–1558, 2010. Abstract It is shown that due to the dissociation of the molecular oxygen it is possible to obtain inverted population in low pressure air by heating. As a result of the quenching of the corresponding levels of the atomic oxygen the thermal superluminescent radiation is generated. It has been found that...

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Transformation of Acoustic Waves in Upper Atmosphere

Posted by on Jan 1, 2010 in Publications, Recent Work Section | 0 comments

A. R. Aramyan, G. A. Galechyan, G. G. Harutyunyan, G. V. Manukyan Laser Physics, Volume 20, Number 1, pp. 298-301, 2010. Abstract The transformation of acoustic waves into electromagnetic oscillations in the plasma of the upper atmosphere is analyzed. It is demonstrated that acoustic oscillations in ionosphere in the presence of the gradients of gas temperature and electron concentration lead to plasma vortices that provide the generation of...

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Formation of Red Sprites

Posted by on Feb 24, 2009 in Publications, Recent Work Section | 0 comments

Formation of Red Sprites A. R. Aramyan, G. A. Galechyan Laser Physics, Volume 19, Number 7, pp. 1480-1482, 24 February, 2009. Abstract The properties of red sprites that are generated in the ionosphere at an altitude of 100 km are considered. A process that leads to the formation of such plasma objects is proposed. It is demonstrated that sprites are generated by acoustic waves that give rise to vortices and gas breakdown in the presence of...

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A Gas Laser Controlled by an Acoustic Wave

Posted by on Nov 1, 2008 in Publications, Recent Work Section | 0 comments

A. R. Aramyan, G. A. Galechyan, G. V. Manukyan Akusticheski Zhurnal, Volume 54, Number 6, pp. 895–899, 2008. Abstract An acoustically induced laser is described. Conditions for producing an inverse population in the discharge in increased-pressure argon by reducing the intensity of an acoustic wave directed along the positive column are considered. Article...

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Red Flashes in Air

Posted by on Sep 14, 2008 in Publications, Recent Work Section | 0 comments

A. R. Aramyan, G. A. Galechyan, G. G. Harutyunyan LaserPhysics, Volume 18, Number 9, pp. 1016-1020, 14 September 2008. Abstract A red flash in a low-pressure air discharge is experimentally studied. Optical radiation, double electric probes, and the electric current of the pulsed plasma that is generated against a low-current stationary discharge are measured. The experimental data are analyzed. Download Full Article Article Site...

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