A Multi-Term Boltzmann Equation Toolset for Low Temperature Plasmas

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Low temperature plasma (LTP) models, such as fluid and global models, frequently rely on Boltzmann equation (BE) solvers for the fast calculation of rate and transport coefficients from cross section data. While multi-term BE solvers currently see strong support in the kinetic modeling community, two-term BE solvers remain the preferred choice in the greater pulsed power and plasma science community. The limitations of the two-term approximation are well known, yet it is still regularly assumed that the two-term approximation is suitable for applications in LTP models. Recent studies have demonstrated otherwise where, even in a simple 1D fluid model, the use of multi-term derived rate and transport coefficients yielded superior fluid model results compared to the same model using two-term derived rate and transport coefficients.Much of the reluctance in adopting multi-term BE solvers may be attributed to a lack of publicly available tools. Here, we report on the public release of MultiBolt v3.0.0 as a free and open-source C++ header library as well as its pre-compiled terminal-based executable and graphical user interface. We also report on the inclusion of new functionality in temperature dependence, superelastic collisions, and the object-oriented treatment of both discrete and analytic cross sections.

Original languageEnglish
Title of host publication2021 IEEE Pulsed Power Conference, PPC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665433471
StatePublished - 2021
Event2021 IEEE Pulsed Power Conference, PPC 2021 - Denver, United States
Duration: Dec 12 2021Dec 16 2021

Publication series

NameIEEE International Pulsed Power Conference
ISSN (Print)2158-4915
ISSN (Electronic)2158-4923


Conference2021 IEEE Pulsed Power Conference, PPC 2021
Country/TerritoryUnited States


  • Boltzmann equation
  • Low temperature plasma


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