The statistics of spoke configurations in HiPIMS discharges

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F19%3A00109130" target="_blank" >RIV/00216224:14310/19:00109130 - isvavai.cz</a>
Result on the web
<a href="http://iopscience.iop.org/article/10.1088/1361-6463/aafab3" target="_blank" >http://iopscience.iop.org/article/10.1088/1361-6463/aafab3</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1361-6463/aafab3" target="_blank" >10.1088/1361-6463/aafab3</a>

Result language
angličtina
Original language name
The statistics of spoke configurations in HiPIMS discharges
Original language description
Ionisation zones, or spokes to which the discharge self-organises during the HiPIMS pulse is a recently investigated phenomenon, however adequately describing or representing these highly dynamical features is a challenge. As the spokes rotate above the target their properties can change over time, with splitting or merging frequently occurring. Here we investigate the evolution of quasi-stable spoke configurations (modes) during the HiPIMS pulse by simultaneously employing six flush mounted strip probes evenly distributed over the target and through observation by a fast camera. This arrangement was used to track the changes in the spoke configuration. The effect of the discharge current at two different pressures on the spoke configuration was statistically examined. A large amount of data was evaluated to claim that at the pressure of 0.2 Pa, there exists an equal probability for spokes to merge and to split. By contrast, spoke configurations at a pressure of 4 Pa exhibited a strong driving force towards higher spoke mode numbers, which was reflected in a significantly higher occurrence of spoke splitting over spoke merging. A simple phenomenological model describing spoke merging and splitting is presented.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)