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Collision Integrals for Transport in Plasmas: The Phenomenological Approach.

Fernando Pirani1, Massimiliano Bartolomei2, Gianpiero Colonna3

  • 1Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia, 06123 Perugia, Italy.

Entropy (Basel, Switzerland)
|March 28, 2026
PubMed
Summary

Accurate transport properties for technological plasmas depend on collision integrals. A phenomenological approach and generalized formulas improve calculations for silicon interactions, enhancing plasma characterization.

Keywords:
ablated speciescollision integralsphenomenological approachtransport properties in plasmas

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Area of Science:

  • Plasma physics and chemistry
  • Computational physics
  • Materials science

Background:

  • Transport properties are crucial for characterizing technological plasmas.
  • Accurate collision integrals are fundamental for calculating transport properties.
  • The phenomenological approach offers a physics-based method for deriving transport cross sections.

Purpose of the Study:

  • To review the features and validation of the phenomenological approach for collision integrals.
  • To estimate the impact of generalized correlation formulas on collision integrals.
  • To assess improvements for interactions involving silicon species in plasma systems.

Main Methods:

  • Review of the phenomenological approach for calculating transport cross sections.
  • Application of generalized correlation formulas for collision integrals.
  • Estimation of the impact of these generalizations on silicon-containing systems.

Main Results:

  • The phenomenological approach provides a robust framework for collision integral calculations.
  • Generalized correlation formulas show a significant impact on collision integrals involving silicon.
  • Improved accuracy in transport property predictions for silicon-based plasmas.

Conclusions:

  • The reviewed method is effective for deriving transport properties.
  • Recent generalizations enhance the accuracy of collision integrals, particularly for silicon species.
  • This work contributes to more precise characterization of technological plasmas.