Non-metal atomic emission spectrometry in helium surface-wave sustained plasmas at 40 and 2450 MHz

Tran, K. C.; Lauzon, Caroline; Sing, Robert; Hubert, J.

doi:10.1039/a801688g

Cited by 21 publications

(6 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 In the last ten years, research carried out on MIPs has shown that these discharges have several advantages as excitation sources in analytical spectrometry. [2][3][4][5][6] A great flexibility, stability, and reproducibility, a wide range of operating conditions, and an efficient excitation of the halogens and other nonmetals with an adequate sensitivity are some of the most outstanding features of these plasmas. Also, recently, MIPs have begun to be employed in the destruction of contaminant compounds 7 and in the purification of the noble gases.…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic Characterization of Two Different Microwave (2.45 GHz) Induced Argon Plasmas at Atmospheric Pressure

et al. 2005

View full text Add to dashboard Cite

A surface-wave-sustained discharge created by using a surfatron device in a tube open to the atmosphere can be used to maintain a microwave (2.45 GHz) plasma at atmospheric pressure at powers of less than 300 W. The TIA (Torche a Injection Axiale) is a device also producing a plasma that, moreover, permits us to work at high power (higher than 200 W and up to 1000 W). A study of the departure from the thermodynamic equilibrium existing in the argon plasmas created by both devices has been done by using optical emission spectroscopy techniques in order to characterize them and to evaluate their possible advantages when they are used for applied purposes.

show abstract

Section: Introductionmentioning

confidence: 99%

Spectroscopic Characterization of Two Different Microwave (2.45 GHz) Induced Argon Plasmas at Atmospheric Pressure

et al. 2005

View full text Add to dashboard Cite

show abstract

“…26 Then, the emission intensities of H ␤ and OH spectral lines from impurities are generally too weak to allow the Abel inversion to be carried out, unless additional H atoms and OH radicals are provided, for example, by adding water vapor to the gas. 8,27 Such additions result in changes of the discharge properties, which in some cases may be considered unacceptable, for instance, when the discharge is sustained in a pulsed regime. 26 A straightforward solution to this problem, whenever applicable, is to determine n e from Stark (quadratic) broadening and T g from Doppler and Van der Waals broadenings of spectral lines emitted by the discharge gas itself.…”

Section: Introductionmentioning

confidence: 99%

Electron Density and Gas Temperature from Line Broadening in an Argon Surface-Wave-Sustained Discharge at Atmospheric Pressure

Christova

Castaños-Martínez²,

Calzada³

et al. 2004

Appl Spectrosc

View full text Add to dashboard Cite

We have used the collisional broadening of neutral argon lines to determine the electron density and gas temperature of a microwave discharge at atmospheric pressure. The gas temperature can be obtained from the Van der Waals broadening, provided that the Stark broadening is negligible. This can be achieved by using lines from low-lying levels (close to the ground state). On the other hand, lines corresponding to transitions from high-lying levels, which are more sensitive to Stark (quadratic) broadening, can be utilized to determine electron density. The electron density values obtained from the quadratic Stark broadening of argon atoms are in reasonable agreement with those derived from the linear Stark broadening of the H(beta) line. The proposed method ensures perturbation-free access to plasma parameters, which is not the case when adding hydrogen to the discharge, even in a small amount, to observe the Balmer series lines.

show abstract

“…Many of these problems can be avoided if the sample is a gas or vapor for which a variety of sample introduction techniques has been developed. [5][6][7][8][9][10] One of the challenges which appear in the application of the MIPs for analytical ends is that of knowing which mechanisms lead to the excitation of the sample to be analyzed. These mechanisms of excitation are still not well known.…”

Section: Introductionmentioning

confidence: 99%

Influence of the thermodynamic equilibrium state in the excitation of samples by a plasma at atmospheric pressure

Calzada

Garcı́a

Luque

et al. 2002

Journal of Applied Physics

View full text Add to dashboard Cite

Articles you may be interested inFormation of diatomic molecular radicals in reactive nitrogen-carbon plasma generated by electron cyclotron resonance discharge and pulsed laser ablation Phys. Plasmas 21, 043512 (2014); 10.1063/1.4873705Study of fluorocarbon plasma in 60 and 100 MHz capacitively coupled discharges using mass spectrometry A radio-frequency nonequilibrium atmospheric pressure plasma operating with argon and oxygen

show abstract

Non-metal atomic emission spectrometry in helium surface-wave sustained plasmas at 40 and 2450 MHz

Cited by 21 publications

References 31 publications

Spectroscopic Characterization of Two Different Microwave (2.45 GHz) Induced Argon Plasmas at Atmospheric Pressure

Spectroscopic Characterization of Two Different Microwave (2.45 GHz) Induced Argon Plasmas at Atmospheric Pressure

Electron Density and Gas Temperature from Line Broadening in an Argon Surface-Wave-Sustained Discharge at Atmospheric Pressure

Influence of the thermodynamic equilibrium state in the excitation of samples by a plasma at atmospheric pressure

Contact Info

Product

Resources

About