Calculation of transport coefficient profiles in modulation experiments as an inverse problem
Plasma Physics
2012-06-07 v2
Abstract
The calculation of transport profiles from experimental measurements belongs in the category of inverse problems which are known to come with issues of ill-conditioning or singularity. A reformulation of the calculation, the matricial approach, is proposed for periodically modulated experiments, within the context of the standard advection-diffusion model where these issues are related to the vanishing of the determinant of a 2x2 matrix. This sheds light on the accuracy of calculations with transport codes, and provides a path for a more precise assessment of the profiles and of the related uncertainty.
Cite
@article{arxiv.1112.5349,
title = {Calculation of transport coefficient profiles in modulation experiments as an inverse problem},
author = {D. F. Escande and F. Sattin},
journal= {arXiv preprint arXiv:1112.5349},
year = {2012}
}
Comments
V2: two typos corrected