NDLI: Energy dependence of processing and breakdown properties of Cu and Mo

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Energy dependence of processing and breakdown properties of Cu and Mo

Content Provider	Semantic Scholar
Author	Timko, Helga Aicheler, Markus Alknes, P. Calatroni, Sergio Djurabekova, Flyura Nordlund, Kai
Copyright Year	2011
Abstract	Helsinki Institute of Physics and Department of Physics, University of Helsinki, P.O. Box 43, FIN-00014, Finland(Received 5 April 2011; published 27 October 2011)Obtaining basic knowledge of breakdowns is desirable in many ﬁelds of physics; however, often theenergy absorbed by a breakdown is not known or can vary by large amounts. We have thereforeinvestigated how processing and breakdown properties scale with available energy for two materials,Cu andMo,in the energyrange of about1mJto 1J. A centralresult obtained isthat there appears to be anoptimum energy forprocessing and thus thehighest possible electric ﬁeld a processed material can sustainwithout breaking down depends on energy accordingly; what this implies for radio frequency cavityprocessing is discussed as well. For Cu, both the local ﬁeld and the ﬁeld enhancement factor showed onlya weak dependence on energy; the average of the local ﬁeld over the entire energy range investigated wasð9:6 0:4Þ GV=m at breakdown. For Mo, the local ﬁeld increased with increasing energy, while the ﬁeldenhancement factor remained constant at 34 2. Finally, a possible explanation of the direct current(DC) processing mechanism—at least in the case of Mo—as an oxide removal process is presented.
File Format	PDF HTM / HTML
DOI	10.1103/PhysRevSTAB.14.101003
Alternate Webpage(s)	https://helda.helsinki.fi/bitstream/handle/10138/28969/PhysRevSTAB.14.101003.pdf?isAllowed=y&sequence=6
Alternate Webpage(s)	http://cds.cern.ch/record/1419186/files/PhysRevSTAB.14.101003.pdf
Alternate Webpage(s)	https://doi.org/10.1103/PhysRevSTAB.14.101003
Volume Number	14
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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