NDLI: The Study of a Reflex Oscillator Used to Generate High-Power Microwaves

Content Provider	IEEE Xplore Digital Library
Author	Scarpetti, Raymond D. Burkhart, Scott C.
Copyright Year	1973
Description	The operation of a high-power short-pulse microwave generator is being studied both experimentally and computationally. The device is a reflex triode which uses a real and a virtual cathode. The operating voltage is 500 kV with an electrical power input of 18 GW and a microwave output power of 200-300 MW at frequencies ranging from 6 to 9 GHz for up to 50 ns. Microwave power is extracted axially in an 85-mm-diameter waveguide with an overall efficiency of 1.5 percent. We will discuss the effects of electron beam quality on output efficiency. Temporal behavior of the output shows a frequency chirping with time which can be related to the voltage and current profiles. Comparing the microwave output at 900 shows azimuthal symmetry. Oscillator behavior when immersed in an external magnetic field, with field strength ranges from 0 to 1.2 kG, will be discussed. Also, computer simulations show that, although the virtual-cathode and reflexing-electron frequencies can be different, a frequency locking can occur, resulting in a purer frequency spectrum with a higher power. Simulations at 2 MeV show microwave output efficiencies of up to 4 percent with peak powers approaching 10 GW.
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	506
Ending Page	512
Page Count	7
File Size	2218543
File Format	PDF
ISSN	00933813
Volume Number	13
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1985-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Microwave oscillators High power microwave generation Microwave generation Frequency Microwave devices Voltage Cathodes Power generation Electron beams Chirp
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

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

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