Some Properties of Field ion Emission from SiO2 Grains
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10133186" target="_blank" >RIV/00216208:11320/12:10133186 - isvavai.cz</a>
Result on the web
<a href="http://www.mff.cuni.cz/veda/konference/wds/proc/pdf12/WDS12_226_f2_Vysinka.pdf" target="_blank" >http://www.mff.cuni.cz/veda/konference/wds/proc/pdf12/WDS12_226_f2_Vysinka.pdf</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Some Properties of Field ion Emission from SiO2 Grains
Original language description
Probably the most abundant dust in space constitutes silicates. When the dust grain is exposed to energetic electron or ion beams it can attain a large surface potential which is limited by field ion emission. It is generally expected that the field ionemission is controlled by the surface electric field, and pressure and composition of the ambient atmosphere. In our study, we have used spherical glass dust grains with diameters around 1 micron charged to several kV. Such charging creates the electricfield in the range of 109 V/m leading to observable field ion emission. A positive charge of the dust grain can be reached not only by ion bombardment but, under some circumstances, by electrons as well. Contrary to the expectations, when charged by electrons, the discharging characteristics depends on the obtained specific charge, the energy of impinging electrons and charging current density. Moreover the discharging shows an increase of the discharging current in the beginning. We sho
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
BL - Plasma physics and discharge through gases
OECD FORD branch
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Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
WDS'12 Proceedings of Contributed Papers: Part II - Physics of Plasmas and Ionized Media
ISBN
978-80-7378-225-2
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
151-155
Publisher name
Matfyzpress
Place of publication
Praha
Event location
Praha
Event date
May 29, 2012
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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