Modeling of a millisecond pulsed glow discharge: Investigation of the afterpeak

Bogaerts, Annemie; Gijbels, R.; Jackson, Glen P.

doi:10.1039/b212606k

Cited by 51 publications

(60 citation statements)

References 88 publications

(156 reference statements)

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“…Because the average speed of the slow particles is significantly less than the speed of the fast ones, the motion of the slow particles is calculated with a larger time step. This is the only difference between fast and slow particles in our model, in contrast to hybrid models used by others [29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44], where different methods are used to simulate fast and slow particles. Trajectories and collisions of fast particles are calculated one after the other, with a time interval of 200 ps.…”

Section: Discharge Stage Modelmentioning

confidence: 83%

“…Processes in DC discharge in a HC were theoretically investigated in [35][36][37][38][39], millisecond pulsed discharges and afterglow were investigated theoretically in [40,41]. However, the significant instantaneous power of the microsecond PGD may lead to another picture of the basic processes in both the discharge and the afterglow, and a separate investigation of microsecond PGD is necessary.…”

Section: Introductionmentioning

confidence: 98%

“…Theoretical models for the simulation of a glow discharge in DC and RF modes for different applications have already been developed [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44], typically a hybrid model is used. Processes in DC discharge in a HC were theoretically investigated in [35][36][37][38][39], millisecond pulsed discharges and afterglow were investigated theoretically in [40,41].…”

Section: Introductionmentioning

confidence: 99%

“…In this work we present a model of a microsecond PGD and its afterglow in HC, and the application of the model for the optimization of a developing commercial Time-of-Flight mass spectrometer "Lumas-30" [22][23][24]45] with HC PGD as an ion source. In the hybrid model [29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44] different submodels are used for simulation of different particles. To avoid difficulties with the combination of these submodels, we have developed another model based on the Monte-Carlo method for all particles in the discharge and continuity equations in the afterglow.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Model of microsecond pulsed glow discharge in hollow cathode for mass spectrometry

Voronov¹,

Ганеев

2009

Spectrochimica Acta Part B: Atomic Spectroscopy

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Section: Discharge Stage Modelmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Model of microsecond pulsed glow discharge in hollow cathode for mass spectrometry

Voronov¹,

Ганеев

2009

Spectrochimica Acta Part B: Atomic Spectroscopy

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“…The measured data were reproduced from the study in [14]. literature on the correct values of reaction rate coefficients that are needed for such a simulation [53].…”

Section: B Discussionmentioning

confidence: 99%

Numerical Description of Pulsed Breakdown Between Parabolic Electrodes

Brok

Wagenaars

Dijk

et al. 2007

IEEE Trans. Plasma Sci.

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A fluid code and a hybrid fluid-particle code are applied to an experimental setup used for breakdown research. The setup consists of two cylindrically symmetric parabolic electrodes, with their tips separated by 3.3 mm in a 3.5-torr argon environment. A voltage pulse was applied with a rise time of 30 µs, followed by a period at a constant voltage of 350 V. Experimental observations of the light emitted by the discharge showed a stratified prebreakdown light flash in a run-up period. After the applied voltage had risen above the 300-V minimum operating voltage, a light front was observed to appear near the anode, to cross the discharge gap toward the cathode, and to spread over its surface. The prebreakdown flash is modeled with the hybrid model. It is caused by the charges that remained in the volume from previous pulses. The model results reproduce striations in the electron energy and density, which are found to occur due to the specific electric field configuration of the electrodes in the discharge chamber. The crossing of the light front is described with the fluid model. Ionization avalanches that start at the cathode due to secondary electrons cause a space charge that is largest near the anode and starts to affect the electric field there first. This extends the anode potential toward the cathode and is observed as a moving front. The results of both models agree qualitatively with experimental observations.

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Glow Discharge Optical Spectroscopy and Mass Spectrometry

Steiner

Barshick

Bogaerts

2009

Encyclopedia of Analytical Chemistry

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Optical (atomic absorption spectroscopy, AAS; atomic emission spectroscopy, AES; atomic fluorescence spectroscopy, AFS; and optogalvanic spectroscopy) and mass spectrometric (magnetic sector, quadrupole mass analyzer, QMA; quadrupole ion trap, QIT; Fourier transform ion cyclotron resonance, FTICR; and time‐of‐flight, TOF) instrumentation are well suited for coupling to the glow discharge (GD). The GD is a relatively simple device. A potential gradient (500–1500 V) is applied between an anode and a cathode. In most cases, the sample is also the cathode. A noble gas (e.g. Ar, Ne, and Xe) is introduced into the discharge region before power initiation. When a potential is applied, electrons are accelerated toward the anode. As these electrons accelerate, they collide with gas atoms. A fraction of these collisions are of sufficient energy to remove an electron from a support gas atom, forming an ion. These ions are, in turn, accelerated toward the cathode. These ions impinge on the surface of the cathode, sputtering sample atoms from the surface. Sputtered atoms that do not redeposit on the surface diffuse into the excitation/ionization regions of the plasma where they can undergo excitation and/or ionization via a number of collisional processes. GD sources offer a number of distinct advantages that make them well suited for specific types of analyses. These sources afford direct analysis of solid samples, thus minimizing the sample preparation required for analysis. The nature of the plasma also provides mutually exclusive atomization and excitation processes that help to minimize the matrix effects that plague so many other elemental techniques. Unfortunately, the GD source functions optimally in a dry environment, making analysis of solutions more difficult. These sources also suffer from difficulties associated with analyzing nonconducting samples. In this article, first, the principles of operation of the GD plasma are reviewed, with an emphasis on how those principles relate to optical spectroscopy and mass spectrometry. Basic applications of the GD techniques are considered next. These include bulk analysis, surface analysis, and the analysis of solution samples. The requirements necessary to obtain optical information are addressed following the analytical applications. This section focuses on the instrumentation needed to make optical measurements using the GD as an atomization/excitation source. Finally, mass spectrometric instrumentation and interfaces are addressed as they pertain to the use of a GD plasma as an ion source. GD sources provide analytically useful gas‐phase species from solid samples. These sources can be interfaced with a variety of spectroscopic and spectrometric instruments for both quantitative and qualitative analysis.

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Modeling of a millisecond pulsed glow discharge: Investigation of the afterpeak

Cited by 51 publications

References 88 publications

Model of microsecond pulsed glow discharge in hollow cathode for mass spectrometry

Model of microsecond pulsed glow discharge in hollow cathode for mass spectrometry

Numerical Description of Pulsed Breakdown Between Parabolic Electrodes

Glow Discharge Optical Spectroscopy and Mass Spectrometry

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