Electron beam requirements for a three-dimensional Smith-Purcell backward-wave oscillator for intense terahertz radiation.
Journal Article
·
· Phys. Rev. ST Accel. Beams
A Smith-Purcell device can operate as a backward-wave oscillator for intense, narrow-bandwidth, continuous wave radiation at terahertz wavelengths. We determine the requirements on electron beam current and emittance for the system to oscillate based on a three-dimensional extension of our previous two-dimensional analysis. It is found that specially designed electron beams are required with a current that exceeds a certain threshold value and a flat transverse profile that allows the beam to travel very close to the grating surface. Two methods for producing electron beams with the required characteristics are discussed.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 929242
- Report Number(s):
- ANL/ASD/JA-59187; TRN: US0804058
- Journal Information:
- Phys. Rev. ST Accel. Beams, Vol. 10, Issue Aug. 2007; ISSN 1098-4402
- Country of Publication:
- United States
- Language:
- ENGLISH
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