Plasma excitation processes in flue gas simulated with Monte Carlo electron dynamics

Tas, MA; Veldhuizen, van Em Eddie; Rutgers, WR Wijnand

doi:10.1088/0022-3727/30/11/013

Cited by 15 publications

(14 citation statements)

References 26 publications

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“…In the present study our preferred elastic H 2 O differential cross sections are the recent results from Cho et al 47 Equation ͑1͒ is only valid if the transmission efficiency of the analyzer remains constant over the energy loss and angular range studied, or is at least well characterized. Unlike our previous study on CO 2 , 48 in this work we determine the behavior of the analyzer response function following the philosophy outlined recently by Allan. 49 Particular attention to the identification and quantification of all possible sources of error has been made throughout these measurements, with a general discussion of these sources of error being found in Brunger and Buckman.…”

Section: ͑1͒mentioning

confidence: 99%

“…These include understanding the observed emissions from cometary atmospheres, 1 in modeling control processes of plasma techniques that seek to ameliorate pollution from fossil fuel combustion, 2 and understanding the origin of the important atmospheric Meinel bands. 3,4 In addition, the initial physical stage of radiation interaction with biological matter can be understood on the basis of the analysis of the track structure caused by charged particles.…”

Section: Introductionmentioning

confidence: 99%

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Cross sections and oscillator strengths for electron-impact excitation of the ÃB11 electronic state of water

Thorn

Brunger²,

Teubner³

et al. 2007

The Journal of Chemical Physics

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The authors report absolute differential and integral cross section measurements for electron-impact excitation of the ÃB11 electronic state of water. This is an important channel for the production of the OH (X̃Π2) radical, as well as for understanding the origin of the atmospheric Meinel [Astrophys. J. 111, 555 (1950)] bands. The incident energy range of our measurements is 20–200eV, while the angular range of the differential cross section data is 3.5°–90°. This is the first time such data are reported in the literature and, where possible, comparison to existing theoretical work, and new scaled Born cross sections calculated as a part of the current study, is made. The scaled Born cross sections are in good agreement with the integral cross sections deduced from the experimental differential cross sections. In addition they report (experimental) generalized oscillator strength data at the incident energies of 100 and 200eV. These data are used to derive a value for the optical oscillator strength which is found to be in excellent agreement with that from an earlier dipole (e,e) experiment and an earlier photoabsorption experiment.

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Section: ͑1͒mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cross sections and oscillator strengths for electron-impact excitation of the ÃB11 electronic state of water

Thorn

Brunger²,

Teubner³

et al. 2007

The Journal of Chemical Physics

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“…Figure 5 shows (EEDF) in the case of the nitrogen at E/N = 100 Td with different initial energies of the electrons. In the case of the nitrogen, the EEDF is Maxwellian for E/N ≥ 500 Td (Tas et al, 1997). Figure 5 shows that when the steady state is achieved and the electric field is relatively high (E/N ≥ 100 Td), and if the initial energy of the electrons changes the EEDF has a negligible change.…”

Section: Resultsmentioning

confidence: 98%

Minimum time to use the fluid model in dc electrical discharges

Ardjani¹,

Liani²

2013

Int. J. Phys. Sci.

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In the study of thermal equilibrium of the electrons, it is very necessary to use the fluid model method. In this work, effect of the gas density, the electrons initial energy and the electric field on the electron thermal equilibrium is studied. It is found that the steady state can be achieved by increasing the gas density or the inter-electrode distance. If the gas density or the inter-electrode distance are not sufficient, steady state can be achieved by increasing the electric field. The initial energy of the electrons has great effect on the steady state if the electric field is weak and the difference between the initial energy and the electrons mean energy is great, however this problem can be solved by extending the time. It is necessary to make a best combination between the gas density, inter-electrode distance and the electric field to make a modeling by the fluid model method in the best cases of the steady state. A simple formula is given here to find the minimum time required to use the fluid model for E/N ≥ 500 Td.

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“…The basis of the MC algorithm used by Tas et al [5] is a re-definition of the EEDF. Usually, it is defined as the energy distribution of an assembly of n electrons at time t. Tas and his co-workers state that the same EEDF is found when the energy of a single electron is sampled at n moments in time.…”

Section: Algorithmmentioning

confidence: 99%

“…Another possibility, we also decided for, is to use Monte Carlo (MC) concept. We have therefore developed open source software called "Web-EEDF" [4], based on the algorithm presented by Tas et al [5].…”

Section: Introductionmentioning

confidence: 99%

Theoretical study of influence of H2O on parameters of low-temperature plasmas in humid mixtures

et al. 2006

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Monte Carlo (MC) electron dynamic simulations in dry and humid N2, O2, CO2 and air were performed in order to obtain electron energy distribution functions (EEDFs), mean free path (λ), drift velocity (v d ) and collision frequency of electrons (ν), their mean energy (ε) and rate coefficients of electron impact reactions, as functions of reduced electric field strength (E/N ) and concentration of H 2 O. The aim was to test the latest compilation of cross-sections for H2O, the applicability of the MC method used, and the effect of the H 2 O concentration.A sensitivity of various parameters to the presence of H2O differs, e. g. λ and ν are more sensitive thanε and v d , and it depends strongly on the E/N . For E/N > 100 Td the parameters may be approximated as their linear combinations of values in pure gases. The difference is below 10 %. For E/N < 100 Td, the difference increases rapidly and MC simulations in mixtures are necessary. The presence of H2O increases the rate coefficients of most studied reactions for E/N > 60 Td. Processes with higher threshold energy imply stronger increase.PACS : 52.65.Pp

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Plasma excitation processes in flue gas simulated with Monte Carlo electron dynamics

Cited by 15 publications

References 26 publications

Cross sections and oscillator strengths for electron-impact excitation of the ÃB11 electronic state of water

Cross sections and oscillator strengths for electron-impact excitation of the ÃB11 electronic state of water

Minimum time to use the fluid model in dc electrical discharges

Theoretical study of influence of H2O on parameters of low-temperature plasmas in humid mixtures

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