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Numerical Investigation of the Non-Uniformity of the Electric Field Distribution by Injection of Net Electron Charge in TE CO2 Laser | ||
| Journal of Electrical and Computer Engineering Innovations (JECEI) | ||
| مقاله 6، دوره 5، شماره 1 - شماره پیاپی 9، فروردین 2017، صفحه 25-29 اصل مقاله (582.98 K) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22061/jecei.2017.626 | ||
| نویسندگان | ||
| N. Morshedian* 1؛ M. Aram2؛ A. Mehramiz3؛ N. Jahanian3 | ||
| 1Plasma and Fusion Research School, NSTRI, North Kargar Ave, Tehran, P.O. Box: 14399-51113, IRAN | ||
| 2Photonics & Quantum Technologies Research School, NSTRI, North Kargar Ave., Tehran, P.O.Box: 14155-1339, IRAN | ||
| 3Department of Physics, Faculty of Science, Imam Khomeini International University, Qazvin, IRAN | ||
| تاریخ دریافت: 21 خرداد 1396، تاریخ بازنگری: 25 تیر 1396، تاریخ پذیرش: 25 تیر 1396 | ||
| چکیده | ||
| In this report, the distribution and deviation of electric field in the active medium of the TE CO2 laser has been investigated due to the injection of net electron charge beam as a plasma generator. Some parameters of system have been considered, such as density and mean-free-path of injected charge beam. The electric potential and electric field distribution have been simulated by solving the Poison’s equation using the method of successive over relaxation (SOR) numerical method. The electrode potential and the number of injected charged particles are respectively considered to be +75 kV and 108 mm-3. In these conditions, the maximum energy of the electrons beam would be at the order of 1-2 eV. Deviation of the electric field with different mean-free-path of electrons beam with Gaussian density distribution has been numerically calculated. It has been concluded that if the net charge density is increased then the field deviation would grow. Moreover, if the mean-free-path of the electrons is decreased, subsequently, the electric field deviation is increased. | ||
| کلیدواژه‌ها | ||
| Carbon dioxide laser pulse؛ Transversal discharge؛ Numerical simulation of electric field؛ Pre-ionization؛ SOR؛ Charge injection | ||
| مراجع | ||
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[1] W.H. Witteman, “The CO2 lasers,” springer-verlag, chap. 6, 1987.
[2] Sourabh and S.B.L. Tripathi, “Calculation of optical gain as a function of pump-power,” International Journal of Research in Science and Technology, vol. 2, no. 2, 2012.
[3] G. Mesyats, V.V. Osipov, and V.F. Tarasenko, “Pulsed gas lasers”, 1995.
[4] E. Aghayari , F. Sade, and M. Aram, “Investigation of the electrods cross sections for the TEA CO2 laser” in Proc. 3th engineering conf.(KAM), Iran, 2015.
[5] http://liberica.org
[6] J.R. Nagel, “Solving the generalized poisson equation using the finite-difference method (FDM),” University of Utah, 2012.
[7] http://eng.utah.edu/~cfurse/NASA/User%20Guide/01%20Z o%20Catalog/Description%20of%20FDFD%20Method.pdf.
[8] J .W.Schmidt and M R. Moldover, “Dielectric Permittivity of Eight Gases Measured with Cross Capacitors,” International Journal of Thermophysics, vol. 24, no. 2, pp. 375-403, 2003. | ||
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