dc.contributor.author | Abe, David | |
dc.contributor.author | Carmel, Yuval | |
dc.contributor.author | Miller, Susanne | |
dc.contributor.author | Bromborsky, Alan | |
dc.contributor.author | Levush, Baruch | |
dc.contributor.author | Antonsen, Thomas Jr | |
dc.contributor.author | Destler, William | |
dc.date.accessioned | 2009-06-08T16:21:56Z | |
dc.date.available | 2009-06-08T16:21:56Z | |
dc.date.issued | 1998-06 | |
dc.identifier.citation | IEEE Transactions onPlasma Science, vol. 26, no. 3, June 1998 | en_US |
dc.identifier.uri | http://hdl.handle.net/1850/9774 | |
dc.description.abstract | Internal field-emission breakdown in the electrodynamic
structures of high-power microwave (HPM) devices can
seriously limit the device’s output power and pulse duration.
Increasing the diameter of the electrodynamic structure to several
times an electromagnetic wavelength can reduce these internal
fields to below critical breakdown levels, but may introduce mode
competition as an unwanted side effect. This paper presents the
design and results of experiments with overmoded (D / (lambda) ~ 3),
sinusoidally corrugated backward-wave oscillators (BWO’s) that
successfully produced TM01, high-power microwave radiation in
the frequency range of 5.2–5.7 GHz. Overmoded BWO’s reproducibly
generated ~200 MW of peak power with corresponding
efficiencies of ~4%. Pulse shortening was not observed in any
of the experiments. The radiation generated by the devices was
highly coherent (typically, (delat)f / f < 0:5%) and corresponded to a
fundamental TM01 -mode interaction. The experimental results
were compared with calculations made with recently developed
nonlinear models; the measured data are shown to agree favorably
with theory. The results of the experiments and modeling
demonstrate that overmoded electrodynamic structures can be
used to decrease internal electric field stresses while avoiding
multimode generation and maintaining good spectral purity.
*Please refer to full-text for correct equations | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | Institute of Electrical and Electronics Engineers | en_US |
dc.relation.ispartofseries | vol. 26 | en_US |
dc.relation.ispartofseries | no. 3 | en_US |
dc.subject | Backward-wave oscillator (BWO) | en_US |
dc.subject | high-power microwave (HPM) | en_US |
dc.subject | overmoded | en_US |
dc.title | Experimental studies of overmoded relativistic backward-wave oscillators | en_US |
dc.type | Article | en_US |