Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Frank, K. Ernst, U. Petzenhauser, I. Hartmann, W. |
| Copyright Year | 2001 |
| Description | Author affiliation: Univ. of Erlangen, Nuremberg, Germany (Frank, K.) |
| Abstract | Summary form only given, as follows. Stable DC operation of microhollow cathode discharges up to atmospheric pressure has been obtained by reducing the diameter of the electrodes and the cathode opening to values in the order of 100 microns in argon and nitrogen. The discharges presented were operated DC and pulsed in a wide current range up to 30 mA with a forward voltage drop up to 200 V for argon and 400 V for nitrogen. Optical emission spectroscopy was used to get information about the plasma properties of the microhollow cathode discharge, which were not available until now. The electron density was measured in pulsed and DC operation by Stark broadening of the hydrogen Balmer H/sub α/ and H/sub β/ line. Hydrogen was added for this purpose with a partial pressure of 10-20 % in argon. The measured electron densities scale linear with discharge current in the order of 10/sup 15/ cm/sup 3/ in the cathode cavity. In parallel the mean electron temperature was determined to about 1 eV from the line intensities ratios of numerous neutral and single ionized argon states by a Boltzmann plot. The temperature of the neutral gas atoms was determined using the rotational-vibrational spectra of the second positive system of molecular nitrogen. It was found that the gas temperature varies from 700-1800 K as function of discharge current and depends on the mode of operation. Under pulsed operation the gas temperature in microhollow cathode discharges can be strongly reduced. |
| Sponsorship | Plasma Sci. & Applications Committee |
| File Size | 71537 |
| File Format | |
| ISBN | 0780371410 |
| DOI | 10.1109/PPPS.2001.961099 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2001-06-17 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Spectroscopy Cathodes Argon Plasma temperature Nitrogen Electrons Optical pulses Density measurement Pulse measurements Hydrogen |
| 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...
|