Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Shi, J.J. Liu, D.W. Kong, M.G. |
| Copyright Year | 2006 |
| Description | Author affiliation: Dept. of Electron. & Electr. Eng., Loughborough Univ., Leicestershire (Shi, J.J.; Liu, D.W.; Kong, M.G.) |
| Abstract | Summary form only given. Atmospheric pressure glow discharges (APGD) generated at radio frequencies generally employ naked electrodes, since the rapid oscillation of the applied voltage suppress very effectively a sustained energy supply to an unrestricted current growth. Consequently, RF APGD are typically stable and it is usually unnecessary to insulate electrodes with dielectric barriers - a common and often essential technique for low frequency APGD in the kilohertz range. As more and more material processing procedures favor high-density plasmas for a superior application efficiency, it is highly desirable that RF APGD can be operated at increasingly high current densities thus imposing greater demands on reliable control of plasma stability. Inevitably, the rapid oscillation of RF voltages alone becomes no longer adequate to ensure plasma stability, and new and additional stability control strategies become important. In this contribution, we present a computational study of how electrode insulation may be used to enhance plasma stability in RF APGD. Temporal characteristics of the discharge current, the applied voltage and the gas voltage are computed over a full range of the current density, from pre-breakdown to arcing. Relationships of the current density with both the applied and the gas voltages are studied in details. These are used to demonstrate that RF atmospheric dielectric-barrier discharges (DBD) acquire a negative differential conductivity at high current densities and as such acquire a similar level of plasma stability to that in conventional RF APGD. However with the dielectric barriers, the differential conductivity of the plasma enclosing electrode unit is always positive in the external circuit. As a result, any plasma instability is suppressed easily and conveniently by capping the power output of the RF power source. In other words, RF atmospheric DBD are more stable than conventional RF APGD even though their plasma characteristics are very similar. Results reported here are likely to form a basis of a stability control strategy for RF APGD |
| Sponsorship | Plasma Sci. and Applications Comm. IEEE Nuclear and Plasma Sci. Soc |
| Starting Page | 2 |
| Ending Page | 2 |
| File Size | 141035 |
| Page Count | 1 |
| File Format | |
| ISBN | 1424401259 |
| DOI | 10.1109/PLASMA.2006.1706874 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2006-06-04 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Dielectrics Radio frequency Glow discharges Plasma stability Electrodes Voltage Current density Plasma density Plasma properties Plasma sources |
| Content Type | Text |
| Resource Type | Article |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|