QDB: a new database of plasma chemistries and reactions

Abstract

One of the most challenging and recurring problems when modelling plasmas is the lack of data on key atomic and molecular reactions that drive plasma processes. Even when there are data for some reactions, complete and validated datasets of chemistries are rarely available. This hinders research on plasma processes and curbs development of industrial applications. The QDB project aims to address this problem by providing a platform for provision, exchange, and validation of chemistry datasets. A new data model developed for QDB is presented. QDB collates published data on both electron scattering and heavy-particle reactions. These data are formed into reaction sets, which are then validated against experimental data where possible. This process produces both complete chemistry sets and identifies key reactions that are currently unreported in the literature. Gaps in the datasets can be filled using established theoretical methods. Initial validated chemistry sets for SF${}_6$/CF${}_4$/O${}_2$ and SF${}_6$/CF${}_4$/N${}_2$/H${}_2$ are presented as examples.

30 pages, 7 figures, 10 tables

References in corpus (8)

• The 2014 KIDA network for interstellar chemistry
• Uncertainty Estimates for Theoretical Atomic and Molecular Data
• Dissociative electron attachment and electron-impact resonant dissociation of vibrationally excited O2 molecules
• Electron-impact resonant vibrational excitation and dissociation processes involving vibrationally excited N2 molecules
• Resonant vibrational-excitation cross sections and rate constants for low-energy electron scattering by molecular oxygen
• R-matrix calculation of electron collisions with electronically excited O2 molecules
• Quantum-mechanical calculations of cross sections for electron collisions with atoms and molecules
• R-matrix calculation of differential cross sections for low-energy electron collisions with ground and electronically excited state O2 molecules

Cited by in corpus (6)

• The physics of streamer discharge phenomena
• 2022 Review of Data-Driven Plasma Science
• Calculated cross sections for low energy electron collision with OH
• Plasma-MDS, a metadata schema for plasma science with examples from plasma technology
• Isotopic and vibrational-level dependence of H${}_2$ dissociation by electron impact
• Modeling Intense-Electron-Beam Generated Plasmas Using a Rigid-Beam Approximation