NDLI: Frequency tunable sealed tube reflex triode vircator

Content Provider	IEEE Xplore Digital Library
Author	Taylor, M. Kelly, P. Lynn, C. Parson, J. Mankowski, J. Neuber, A. Dickens, J. Kristiansen, M.
Copyright Year	2013
Description	Author affiliation: Center for Pulsed Power & Power Electron., Texas Tech Univ., Lubbock, TX, USA (Taylor, M.; Kelly, P.; Lynn, C.; Parson, J.; Mankowski, J.; Neuber, A.; Dickens, J.; Kristiansen, M.)
Abstract	Summary form only given. A virtual cathode oscillator (vircator) is a high power microwave device that exhibits frequency tunability which is inherent to its principle of operation. Two types of electron motion within the vircator generate microwaves (virtual cathode oscillation and reflexing electron motion). Although it is difficult to precisely predict the dominant microwave frequency of a vircator design prior to experimental observation, the oscillation frequency of the virtual cathode is approximately proportional to the plasma frequency of the electron beam as it enters the virtual cathode. Additionally, the reflexing electrons oscillate at a frequency which is inversely proportional to approximately four times the transit time of an electron through the anode-cathode gap (A-K gap). As a result, assuming space charge limited diode operation, the virtual cathode and reflexing electron oscillation frequencies, though different, are proportional to $V^{1/2}/d,$ where d is the gap separation of the A-K gap and V is the accelerating voltage applied to the gap. Thus vircators are tunable via adjusting the A-K gap and varying the applied accelerating voltage. Texas Tech University has developed a sealed tube vircator which radiates approximately 100 MW with an operational frequency of 4GHz. Operating at 4GHz the diode has an A-K gap of 8mm, an accelerating voltage of ~200 k V, and electron beam current of ~3.5kA. Here we present an experimental investigation of the tunability of a reflex triode vircator by varying the A-K gap from 4 mm to 10 mm and accelerating voltages ranging from 150 kV to 250 kV.
Starting Page	1
Ending Page	1
File Size	93140
Page Count	1
File Format	PDF
ISBN	9781467351713
ISSN	07309244
DOI	10.1109/PLASMA.2013.6635087
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cathodes Acceleration Electron tubes Educational institutions Microwave devices Microwave oscillators
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

Performance of NEG getter materialin a sealed reflex-triode vircator at 225 $A/cm^{2}$

REP-rate operation of a ∼200 KV sealed-tube reflex-triode vircator at ∼200 $A/cm^{2}$

Cold cathode realization for triode electron gun

Frequency Variation of a Reflex-Triode Virtual Cathode Oscillator

Burst mode operation of >100 MW reflex triode vircator

Advances in virtual cathode microwave sources

Operation of a Sealed-Tube-Vircator High-Power-Microwave Source

Low frequency noise in a coupled-cavity traveling wave tube

Oscillation Frequency of a Reflex-Triode Virtual Cathode Oscillator

Frequency tunable sealed tube reflex triode vircator

Similar Documents

Performance of NEG getter materialin a sealed reflex-triode vircator at 225 $A/cm^{2}$

REP-rate operation of a ∼200 KV sealed-tube reflex-triode vircator at ∼200 $A/cm^{2}$

Cold cathode realization for triode electron gun

Frequency Variation of a Reflex-Triode Virtual Cathode Oscillator

Burst mode operation of >100 MW reflex triode vircator

Advances in virtual cathode microwave sources

Operation of a Sealed-Tube-Vircator High-Power-Microwave Source

Low frequency noise in a coupled-cavity traveling wave tube

Oscillation Frequency of a Reflex-Triode Virtual Cathode Oscillator

Frequency tunable sealed tube reflex triode vircator