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@ARTICLE{Hellwig:863536,
author = {Hellwig, Maren and Köppen, Martin and Hiller, Albert and
Koslowski, Hans and Litnovsky, Andrey and Schmid, Klaus and
Schwab, Christian and De Souza, Roger},
title = {{I}mpact of {S}urface {R}oughness on {I}on-{S}urface
{I}nteractions {S}tudied with {E}nergetic {C}arbon {I}ons
13{C}+ on {T}ungsten {S}urfaces},
journal = {Condensed Matter},
volume = {4},
number = {1},
issn = {2410-3896},
address = {Basel},
publisher = {MDPI},
reportid = {FZJ-2019-03575},
pages = {29 -},
year = {2019},
abstract = {The effect of surface roughness on angular distributions of
reflected and physically sputtered particles is investigated
by ultra-high vacuum (UHV) ion-surface interaction
experiments. For this purpose, a smooth (Ra = 5.9 nm) and a
rough (Ra = 20.5 nm) tungsten (W) surface were bombarded
with carbon ions 13C+ under incidence angles of 30° and
80°. Reflected and sputtered particles were collected on
foils to measure the resulting angular distribution as a
function of surface morphology. For the qualitative and
quantitative analysis, secondary ion mass spectrometry
(SIMS) and nuclear reaction analysis (NRA) were performed.
Simulations of ion-surface interactions were carried out
with the SDTrimSP (Static Dynamic Transport of Ions in
Matter Sputtering) code. For rough surfaces, a special
routine was derived and implemented. Experimental as well as
calculated results prove a significant impact of surface
roughness on the angular distribution of reflected and
sputtered particles. It is demonstrated that the effective
sticking of C on W is a function of the angle of incidence
and surface morphology. It is found that the predominant
ion-surface interaction process changes with fluence},
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:000464287700001},
doi = {10.3390/condmat4010029},
url = {https://juser.fz-juelich.de/record/863536},
}