Broadening of the Spectral Atomic Lines Analysis in High Density Argon Corona Plasma by Using Voigt Profile

[摘要] Studies of spectrum emission from high density argon plasma corona has been done. The analysis of the boardening of spectral atomic lines of Ar-I profile has been curried out by using an empirical approximation based on a Voigt profile. Full-width at half-maximum (FWHM) of the spectral-lines of 763.5 nm has been determined from atmospheric pressure until liquid state. The study liquid argon was curried out in a variation of temperature from K to 151.2 K and hydrostatics pressure from 2.1 MPa to 6.4 MPa. These pressure gives the densities N∞(i.e. density very far from ionization zone) a variation from 1.08 1022to 2.11 1022cm-3. FWHM of Voigt approximation (Wv) of the line 763,5 nm of 'Ar I for: the emission lamp very low pressure (Wv= 0,160 nm) and our corona discharge at a pressure of MPa (Wv= 0,67 nm) and at a pressure of 9,5 MPa (Wv= 1,16 nm). In gas, corona plasma has been generated from 0.1 MPa to 9.5 MPa. We found that the broadening spectral line increase by increasing densities both for. The spectral-lines of 763.5 nm and 696.5 nm. We concluded that broadening of spectrum cause of Van der Waals force.

[发布机构] Department of Physics, Faculty of Science and Mathematics, Diponegoro University, Semarang, Indonesia^1;G2E.Laboratory, CNRS, Joseph Fourier University, 25 rue des Martyrs, Grenoble; 38042, France^2;Joint Institute for High Temperatures (JIHT), Russian Academy of Sciences, Izhorskaya St. 13, Moscow; 2125412, Russia^3

[效力级别] 化学

[关键词] Argon plasmas;Corona discharges;Corona plasmas;Empirical approximations;Low pressures;Spectral line;Spectrum emission;Voigt profile