NDLI: Vircator efficiency enhancement at plasma assistance

Content Provider	IEEE Xplore Digital Library
Author	Onishchenko, I.N. Prokopenko, Yu.V. Pushkarev, S.S. Chupikov, P.T.
Copyright Year	2004
Description	Author affiliation: Nat. Sci. Centre, Kharkov Inst. of Phys. & Technol., Ukraine (Onishchenko, I.N.; Prokopenko, Yu.V.; Pushkarev, S.S.; Chupikov, P.T.)
Abstract	Summary form only given. The experimental researches of generation of microwave radiation produced in a system of a relativistic electron beam (REB) with a supercritical current and external plasma source have been carried out. The pulsed electron accelerator has been put into operation that produces high-current relativistic electron beam with parameters: energy 280 keV, current 4.4 kA, pulse duration 0.8 msec. The generator of pulsed voltage supplied magnetically insolated diode of magnetron type by voltage impulse of 300 kV and duration 1 /spl mu/sec at diode impedance 64 Ohm. The diode was manufactured with cylindrical cathode from stainless steel of diameter 38 mm and emission edge width 0.1 mm. Anode has a conical form that transform into cylindrical liner of inner diameter 50 mm for transportation of tubular electron beam with diameter 32 mm and thickness 1 mm. Virtual cathode in magnetically insolated diode was realized by means of jump of the electrodynamics structure, namely sharp change of anode (drift tube) diameter from 40 mm, for which vacuum limiting current is 4.4 kA, to 50 mm, for which vacuum limiting current is 3.4 kA. The availability of the virtual cathode is confirmed by the measurements of input and output current of electron beam and also by registration of high-frequency radiation (vircator operation). The outer plasma was created by plasma source that consists of 4 plasma guns placed uniformly over azimuth of the drift tube for radial injection into virtual cathode region. The measured plasma parameters were: density 10/sup 12/ cm/sup -3/, temperature 3.6 eV, directed velocity 2.3/spl times/10/sup 6/ cm/sec. Microwave radiation was measured by detector /spl Lt/DK-J2M/spl Gt/ from the horn antenna. The results of investigations have shown that at presence of external plasma in electrodynamics' structure of the vircator-generator the power of microwave radiation is essentially increased in comparison to the vacuum case.
Sponsorship	Plasma Sci. and Applications Committee of the IEEE Nuclear and Plasma Sci. Soc
File Size	46033
File Format	PDF
ISBN	0780383346
ISSN	07309244
DOI	10.1109/PLASMA.2004.1339935
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-07-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Plasma measurements Plasma sources Plasma temperature Electron beams Diodes Cathodes Plasma density Voltage Anodes Electrodynamics
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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