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@ARTICLE{Reiser:865449,
author = {Reiser, Dirk},
title = {{M}odel discovery for studies of surface morphological
modifications based on {K}uramoto-{S}ivashinsky dynamics},
journal = {Physical review / E},
volume = {100},
number = {3},
issn = {2470-0045},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2019-04900},
pages = {033312},
year = {2019},
abstract = {A wide range of observations in studies of surfaces exposed
to ion beams can be explained and analyzed successfully by
continuum models of the Kuramoto-Sivashinsky type. Despite
certain progress in the theoretical understanding of the
model parameters on the basis of atomistic models, much of
the applications are based on phenomenological determination
of several unknown quantities. In this work a numerical tool
is discussed and investigated, which allows us to determine
model coefficients and complex model structures from
experimental findings. The method resembles known approaches
in machine learning and data-driven reconstruction
techniques. To keep the discussion on a fundamental level,
numerical simulations are conducted by employing a scaled
test model. The reconstruction technique is demonstrated for
this model system and shows a high accuracy in recovering
input parameters for situations without beam noise. As an
application to an unknown system to be explored, the
algorithm is then applied to a system with lognormal
distributed ion bombardment. The impact of the beam
fluctuations in the proposed model are discussed.
Perspectives of the numerical algorithm for an analysis of
experimental data are addressed.},
cin = {IEK-4},
ddc = {530},
cid = {I:(DE-Juel1)IEK-4-20101013},
pnm = {174 - Plasma-Wall-Interaction (POF3-174)},
pid = {G:(DE-HGF)POF3-174},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000487738200011},
pubmed = {pmid:31639987},
doi = {10.1103/PhysRevE.100.033312},
url = {https://juser.fz-juelich.de/record/865449},
}