Skip to Main content Skip to Navigation
Journal articles

Probabilistic representations of partial branching ratios: bridging the gap between experiments and chemical models

Pascal Pernot 1 Sylvain Plessis 1 Nathalie Carrasco 2
2 PLANETO - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
Abstract : Dissociative recombination (DR) of polyatomic positive ions with electrons is a very complex process, for which the breakup patterns into neutral fragments are presently unpredictable. Measured branching ratios to the various products channels are thus the only data source for modelers of chemical plasmas. Because of limited detector resolution, data for many ions are incomplete, and implementation of DR processes in chemical models is problematic. In a recent paper [Plessis S et al. 2010 J. Chem. Phys. 133 134110], we proposed a novel approach, based on probabilistic trees, enabling modelers to fully account for the hierarchy of available information. For the first time, we were able to build a chemical model for Titan's ionosphere including all available data about DR branching ratios. The improvement on previous models is considerable, and the data needs for Titan are redefined accordingly.
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-00618935
Contributor : Catherine Cardon <>
Submitted on : Wednesday, January 13, 2021 - 8:26:45 PM
Last modification on : Wednesday, April 7, 2021 - 8:20:02 PM

File

Pernot_2011_J._Phys.%3A_Conf._...
Publisher files allowed on an open archive

Identifiers

Citation

Pascal Pernot, Sylvain Plessis, Nathalie Carrasco. Probabilistic representations of partial branching ratios: bridging the gap between experiments and chemical models. Journal of Physics: Conference Series, IOP Publishing, 2011, 300, pp.012027. ⟨10.1088/1742-6596/300/1/012027⟩. ⟨hal-00618935⟩

Share

Metrics

Record views

287

Files downloads

20