Bayesian Determination of Parameters for Plasma-Wall Interactions
Max-Planck-Institut für Plasmaphysik, 85748 Garching, Germany
*
Author to whom correspondence should be addressed.
Entropy 2019, 21(12), 1175; https://doi.org/10.3390/e21121175
Received: 15 October 2019 / Revised: 18 November 2019 / Accepted: 26 November 2019 / Published: 29 November 2019
(This article belongs to the Special Issue MaxEnt 2019—The 39th International Workshop on Bayesian Inference and Maximum Entropy Methods in Science and Engineering)
Within the Bayesian framework a non-intrusive uncertainty quantification is performed to assess the uncertainty of ion–solid interaction simulations. For this we employ a reduced-order spectral expansion approach which is capable of confining the number of model runs to a feasible size. Moreover, the method facilitates sensitivity examinations regarding to input parameters of the model. It is applied to the ion–solid simulation program SDTrimSP with several uncertain but normally distributed input parameters, i.e., impact angle , projectile energy , and surface binding energy . Consequently, the otherwise hardly accessible model parameter can be estimated in combination with recently acquired experimental data.
Keywords:
uncertainty quantification; non-intrusive; spectral expansion; plasma-wall interactions; Bayesian analysis
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
MDPI and ACS Style
Preuss, R.; Arredondo, R.; von Toussaint, U. Bayesian Determination of Parameters for Plasma-Wall Interactions. Entropy 2019, 21, 1175.
Show more citation formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.