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Adhesive force distributions for tungsten dust deposited on bulk tungsten and beryllium-coated tungsten surfaces
KTH, School of Electrical Engineering and Computer Science (EECS), Space and Plasma Physics.
KTH, School of Electrical Engineering and Computer Science (EECS), Space and Plasma Physics.ORCID iD: 0000-0002-6712-3625
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2018 (English)In: Nuclear Materials and Energy, E-ISSN 2352-1791, Vol. 15, p. 55-63Article in journal (Refereed) Published
Abstract [en]

Comprehensive measurements of the adhesive force for tungsten dust adhered to tungsten surfaces have been performed with the electrostatic detachment method. Monodisperse spherical dust has been deposited with gas dynamics techniques or with gravity mimicking adhesion as it naturally occurs in tokamaks. The adhesive force is confirmed to follow the log-normal distribution and empirical correlations are proposed for the size-dependence of its mean and standard deviation. Systematic differences are observed between the two deposition methods and attributed to plastic deformation during sticking impacts. The presence of thin beryllium coatings on tungsten surfaces is demonstrated to barely affect adhesion.

Place, publisher, year, edition, pages
Elsevier Ltd , 2018. Vol. 15, p. 55-63
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Physical Sciences
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URN: urn:nbn:se:kth:diva-238239DOI: 10.1016/j.nme.2018.05.013ISI: 000435611400009Scopus ID: 2-s2.0-85048178222OAI: oai:DiVA.org:kth-238239DiVA, id: diva2:1259993
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QC 20181031

Available from: 2018-10-31 Created: 2018-10-31 Last updated: 2019-05-23Bibliographically approved

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Ratynskaia, Svetlana V.

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