On-surface Dust Grain Sputtering: Experiment and Model

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10319783" target="_blank" >RIV/00216208:11320/15:10319783 - isvavai.cz</a>
Result on the web
<a href="http://www.mff.cuni.cz/veda/konference/wds/proc/pdf15/WDS15_38_f2_Vysinka.pdf" target="_blank" >http://www.mff.cuni.cz/veda/konference/wds/proc/pdf15/WDS15_38_f2_Vysinka.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
On-surface Dust Grain Sputtering: Experiment and Model
Original language description
Dust grains in an interplanetary environment can be found generally in two types of locations-floating in a free space and laying on surfaces (e.g., asteroids, comets, Moons). In this study, we focuss on a sputtering process of a dust grain laying on a surface. As a representative of silicate-type dust we use 1 um spherical SiO_2 particles. The experiment is performed using the Tescan SEM Lyra system when the grain is sputtered by a 30 keV Ga^+ ion beam from the embedded FIB. A change of the grain shapefrom spherical to frustum is observed. The sputtering yield is higher at the beginning of the sputtering session and gradually decreases due to grain shape changes. A simple model of the grain sputtering explains the grain shape development when the modified angular dependence of the sputtering yield is used.
Czech name
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Czech description
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Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
WDS'15 Proceedings of Contributed Papers - Physics
ISBN
978-80-7378-311-2
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
222-226
Publisher name
Matfyzpress
Place of publication
Praha
Event location
Prague, Czech Republic
Event date
Jun 2, 2015
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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