The LisbOn KInetics Monte Carlo solver

Dias, Tiago Cunha; Tejero-del-Caz, Antonio; Alves, L. L.; Guerra, Vasco

doi:10.1016/j.cpc.2022.108554

Cited by 13 publications

(42 citation statements)

References 65 publications

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“…This section introduces the concept of anisotropic rotational collisions of electrons with water molecules and details how the anisotropy is included in the used codes, namely the twoterm Boltzmann solver LoKI-B [18] and the MC simulations code LoKI-MC [34].…”

Section: Anisotropic Scattering In Dipole Rotational Collisionsmentioning

confidence: 99%

“…The MC method used in LoKI-MC is described in [34]. In short, it simulates the accelerated electron transport in a background gas by following the stochastic trajectory of a representative ensemble of N e electrons.…”

Section: Anisotropic Scattering In a MC Solvermentioning

confidence: 99%

“…The complete CS set of figure 2 is validated by the electron swarm technique using the two-term Boltzmann solver LoKI-B [18] and the MC simulation tool LoKI-MC [34], both freely available as open-source codes [33]. Anisotropic rotational scattering is included in both solvers through the methods described in section 2.…”

Section: Validationmentioning

confidence: 99%

“…Herein, we present a complete and consistent anisotropic set of electron-neutral collision CSs for electrons in water vapour to the community. Usability is ensured through the latest releases of the LisbOn KInetics open-source codes [33], namely the two-term Boltzmann solver LoKI-B [18] and the MC simulation tool LoKI-MC [34], both including anisotropic scattering. The latter validates the proposed anisotropic CS set at high E/N conditions where the two-term Boltzmann solver may fail and extend the comparison with experiment to bulk transport coefficients.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Electron-neutral collision cross sections for H₂O: II. Anisotropic scattering and assessment of the validity of the two-term approximation

Budde

Dias²,

Vialetto

et al. 2023

J. Phys. D: Appl. Phys.

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This work proposes a complete and consistent set of cross sections for electron collisions with water gas molecules to be published in the IST-Lisbon database on LXCat. The set is validated by the electron swarm analysis technique. The anisotropic angular distribution of electrons in rotational collisions is considered by means of the Born approximation in a two-term Boltzmann solver(LoKI-B) and a Monte Carlo simulations code (LoKI-MC), both freely available as open-source codes. The inclusion of electron anisotropic scattering in rotational collisions significantly improves the agreement between calculations and measurements of the electron drift velocity, reduced mobility, characteristic energy, reduced Townsend ionisation coefficient, reduced effective Townsendcoefficient and reduced attachment coefficient. The MC simulations are deemed more accurate and shown to yield similar results as LoKI-B with the proposed set. The use of LoKI-MC also validates the set of cross sections against parameters that cannot be obtained by LoKI-B, such as the longitudinal diffusion coefficient or the bulk transport coefficients.

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Section: Anisotropic Scattering In Dipole Rotational Collisionsmentioning

confidence: 99%

Section: Anisotropic Scattering In a MC Solvermentioning

confidence: 99%

Section: Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electron-neutral collision cross sections for H₂O: II. Anisotropic scattering and assessment of the validity of the two-term approximation

Budde

Dias²,

Vialetto

et al. 2023

J. Phys. D: Appl. Phys.

Self Cite

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“…15) Although several different advanced methods are known as exact solution methods for the BE, the most well-known one is the Monte Carlo (MC) method. 1,16) Some programs such as METHES 17) and LoKI-MC 18) are known. In this method, the time evolution of EVDF is calculated on the basis of the motion of a finite number of representative electrons, which is stochastically tracked using random numbers to determine the electron free flight time or to judge the occurrence of a collisional event, and the final steady-state EVDF is obtained.…”

Section: Introductionmentioning

confidence: 99%

An improved calculation scheme of electron flow in a propagator method for solving the Boltzmann equation

Kobayashi¹,

Sugawara

Ikeda³

2023

Jpn. J. Appl. Phys.

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In order to accurately evaluate the electron acceleration process in the time evolution calculation of electron velocity distribution function (EVDF) based on the Boltzmann equation, an improved scheme blending upwind and central differences is introduced into the propagator method (PM). While the previous PM based on the upwind scheme needs fine cells to obtain an accurate EVDF at low electric fields, the improved PM is robust against coarse cells, which allows the reduction of the cell resolution. Calculations of the EVDF in Ar under RF electric fields demonstrated that the blending scheme can provide satisfactorily accurate results even with cells about tenfold larger than the upwind case at low reduced electric fields below 1 Td, which leads to much shorter computational time because the reduction of number of cells satisfactorily compensates the complexity of the blending scheme. This technique has been built into a new user-friendly PM software named BOSPROM.

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An efficient solution of the multi-term multi-harmonic electron Boltzmann equation for use in global models

Lynch,

Sippel,

Subramaniam

2024

Computer Physics Communications

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The LisbOn KInetics Monte Carlo solver

Cited by 13 publications

References 65 publications

Electron-neutral collision cross sections for H₂O: II. Anisotropic scattering and assessment of the validity of the two-term approximation

Electron-neutral collision cross sections for H₂O: II. Anisotropic scattering and assessment of the validity of the two-term approximation

An improved calculation scheme of electron flow in a propagator method for solving the Boltzmann equation

An efficient solution of the multi-term multi-harmonic electron Boltzmann equation for use in global models

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The LisbOn KInetics Monte Carlo solver

Cited by 13 publications

References 65 publications

Electron-neutral collision cross sections for H2O: II. Anisotropic scattering and assessment of the validity of the two-term approximation

Electron-neutral collision cross sections for H2O: II. Anisotropic scattering and assessment of the validity of the two-term approximation

An improved calculation scheme of electron flow in a propagator method for solving the Boltzmann equation

An efficient solution of the multi-term multi-harmonic electron Boltzmann equation for use in global models

Contact Info

Product

Resources

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Electron-neutral collision cross sections for H₂O: II. Anisotropic scattering and assessment of the validity of the two-term approximation

Electron-neutral collision cross sections for H₂O: II. Anisotropic scattering and assessment of the validity of the two-term approximation