Self-organization phenomena in cold atmospheric pressure plasma slit jet

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F22%3APU147333" target="_blank" >RIV/00216305:26620/22:PU147333 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/22:00128318

Result on the web

<a href="https://iopscience.iop.org/article/10.1088/1361-6595/acab82" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-6595/acab82</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6595/acab82" target="_blank" >10.1088/1361-6595/acab82</a>

Result language

angličtina

Original language name

Self-organization phenomena in cold atmospheric pressure plasma slit jet

Original language description

The radio frequency plasma slit jet, which produces 150 mm wide streaming plasma outside the jet body, exhibits exciting self-organization phenomena that resemble the self-organized patterns of dielectric barrier discharge (DBD) filaments. Similarly, as in DBD, the filaments are surrounded by an inhibition zone that does not allow two filaments to come closer to each other. With fast camera imaging, we observed the filamentary character of the discharge in all the studied gas feeds (Ar, Ar/N-2, and Ar/O-2). Still, the visual appearance of the filaments in the plasma and their interaction with a dielectric surface depended significantly on the gas feed. As the breakdown voltage in pure Ar is relatively low compared to the applied one, new filaments form frequently. Such newly created filaments disrupted the characteristic inter-filament distance, forcing the system to rearrange. The frequent ignition and decay processes in Ar led to short filament lifetimes (0.020-0.035 s) and their high jitter speed (0.9-1.7 m s(-1)), as determined with an image processing custom code based on Gwyddion libraries. The number of filaments was lower in the Ar/O-2 and Ar/N-2 mixtures. It was attributed to a loss of energy in the excitation of rotational and vibrational levels and oxygen electronegativity. Since the probability of low-current side discharges transitioning into the full plasma filaments was limited in these gas mixtures, the self-organized pattern was seldom disrupted, leading to lesser movement and longer lifetimes. Unlike in Ar or Ar/O-2, the constricted filaments in Ar/N-2 were surrounded by diffuse plasma plumes, likely connected to the presence of long-lived nitrogen species. We demonstrated in the polypropylene treatment that the self-organization phenomena affected the treatment uniformity.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10300 - Physical sciences

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

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Plasma Sources Science and Technology

ISSN

0963-0252

e-ISSN

1361-6595

Volume of the periodical

31

Issue of the periodical within the volume

12

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

1-13

UT code for WoS article

000907216600001

EID of the result in the Scopus database

2-s2.0-85145878511