Erlangen 2018 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 6: Codes and Modelling

P 6.4: Vortrag

Montag, 5. März 2018, 17:15–17:30, KI 1.174

Yacora on the Web: providing collisional radiative models for plasma spectroscopists — •Dirk Wünderlich1, Maurizio Giacomin1, Raphael Ritz2, and Ursel Fantz11Max- Planck- Institut für Plasmaphysik, 85748 Garching, Germany — 2Max Planck Computing and Data Facility, 85748 Garching, Germany

Collisional radiative (CR) models are essential tools for interpreting population densities measured in low temperature plasmas, for example by optical emission spectroscopy.

The flexible solver Yacora was used in the last years for developing and extensively benchmarking a multitude of CR models for different atomic and molecular species. These models then have been applied for plasma diagnostics at plasma experiments worldwide. The steadily increasing interest triggered the development of Yacora on the Web (www.yacora.de), a web application making available some of the Yacora CR models to the broad public, namely the models for atomic and molecular hydrogen and for helium. The model for H includes excitation channels involving other particle species like electron-ion recombination of H+ and H2+ and mutual recombination of positive with negative hydrogen ions. The model for H2 includes all electronically excited states up to the principal quantum number p=3.

The presentation introduces Yacora on the Web and the features and properties of the available models. Examples for the application for plasma diagnostics are given and future extensions of Yacora on the Web are discussed.

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