Simulation of stochastic model processes in the theory of stark-broadening

Frerichs, Martin R.

doi:10.1007/bf01438505

Cited by 10 publications

(5 citation statements)

References 11 publications

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“…This justifies averaging the evolution operator over these electronic fluctuations for a given ionic microfield value. The procedure has been applied to the Model Microfield Method by and discussed by Frerichs (1989). It requires first calculating, for the static ionic microfield F i , the evolution operator < U(ω, F i ) > e , averaged over electrons, and then performing the dynamical MMM average over the ions.…”

Section: Description Of the Methodsmentioning

confidence: 99%

Extensive tabulations of Stark broadened hydrogen line profiles

Stehlé

Hutcheon

1999

Astron. Astrophys. Suppl. Ser.

190

182

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Abstract. New tables of Stark broadened hydrogen Lyman, Balmer and Paschen lines are presented for a wide range of plasma conditions, allowing the complete spectrum of these series to be modelled up to the Inglis Teller limit. The formalism, based on the Model Microfield Method (MMM) for both the electronic and ionic broadenings, gives an accurate description of the line profile from the centre to the wings.

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Section: Description Of the Methodsmentioning

confidence: 99%

Extensive tabulations of Stark broadened hydrogen line profiles

Stehlé

Hutcheon

1999

Astron. Astrophys. Suppl. Ser.

190

182

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“…In that first work the relative movement between the emitter and the heavy perturbers was described using the so-called μ-ion model, whose validity was later studied in another work [68] and is still a common method used in many simulation techniques, including those whose results are shown later in this contribution. The good agreement between these simulations and the experiments gave rise to a growth in the number of research groups studying line broadening using simulation techniques [69][70][71][72][73][74][75][76][77]. Computer simulations have been used as the basis of computer programs for electron density determination from experimental profiles [78] and to obtain large tabulations of Hydrogen [14,79] or Helium Stark profiles [80,81].…”

Section: Overview Of Stark Broadening Theory and Applicationmentioning

confidence: 99%

Electron density measurement in atmospheric pressure plasma jets: Stark broadening of hydrogenated and non-hydrogenated lines

Nikiforov

Leys

González

et al. 2015

Plasma Sources Sci. Technol.

181

179

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Electron density is one of the key parameters in the physics of a gas discharge. In this contribution the application of the Stark broadening method to determine the electron density in low temperature atmospheric pressure plasma jets is discussed. An overview of the available theoretical Stark broadening calculations of hydrogenated and non-hydrogenated atomic lines is presented. The difficulty in the evaluation of the fine structure splitting of lines, which is important at low electron density, is analysed and recommendations on the applicability of the method for low ionization degree plasmas are given. Different emission line broadening mechanisms under atmospheric pressure conditions are discussed and an experimental line profile fitting procedure for the determination of the Stark broadening contribution is suggested. Available experimental data is carefully analysed for the Stark broadening of lines in plasma jets excited over a wide range of frequencies from dc to MW and pulsed mode. Finally, recommendations are given concerning the application of the Stark broadening technique for the estimation of the electron density under typical conditions of plasma jets.

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“…The expansion (26) does not depend on the orientation of vector u nor on the representation base chosen for the matrices. Thus, the base in which operator u • J is diagonal will be preferred since this yields to a relation among diagonal matrices.…”

Section: Calculation Of the Autocorrelation Functionmentioning

confidence: 99%

“…Molecular-dynamics simulation were also the basis of several semianalytical computations. In this case, a computer simulation was carried out in order to get an electric field from which several statistical parameters could be extracted and used in the analytical evaluation of the final spectral profiles [22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

New plasma diagnosis tables of hydrogen Stark broadening including ion dynamics

Cardeñoso

1996

J. Phys. B: At. Mol. Opt. Phys.

373

306

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A set of tables of the Stark width of the first three lines of Lyman and Balmer series of hydrogen, useful for plasma diagnosis purposes, is presented in this work. These tables have been obtained by means of a fully recognized computer simulation technique. Computer experiments have been carried out for density values between and . Simulation temperatures range from 2245 K to 224 856 K. Ion dynamics effects are taken into account in a natural way and the most significative gas mixtures have been covered in the simulations, carried out at the reduced mass of the emitter - perturber pair , 0.6, 0.8, 0.9, 1.0, 1.25, 1.5, 1.75 and 2.0. A detailed discussion of the influence of the relevant plasma parameters on the characteristics of the profiles is also included. The results show an excellent agreement with up-to-date experimental results and confirm these kind of profile calculation techniques as now the most accurate.

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Simulation of stochastic model processes in the theory of stark-broadening

Cited by 10 publications

References 11 publications

Extensive tabulations of Stark broadened hydrogen line profiles

Extensive tabulations of Stark broadened hydrogen line profiles

Electron density measurement in atmospheric pressure plasma jets: Stark broadening of hydrogenated and non-hydrogenated lines

New plasma diagnosis tables of hydrogen Stark broadening including ion dynamics

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