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pubmed-article:11970143pubmed:dateCreated2002-4-23lld:pubmed
pubmed-article:11970143pubmed:abstractTextExperimental results of the observation of coherent stimulated radiation from subnanosecond electron bunches moving through a periodic waveguide and interacting with a backward propagating wave are presented. The subnanosecond microwave pulses in Ka and W bands were generated with repetition frequencies of up to 25 Hz. The mechanism of microwave pulse generation was associated with self-bunching, and the mutual influence of different parts of the electron pulse due to slippage of the wave with respect to the electrons; this can be interpreted as superradiance. The illumination of a panel of neon bulbs resulted in a finely structured pattern corresponding to the excitation of the TM01 mode. Observation of rf breakdown of ambient air, as well as direct measurements by hot-carrier germanium detectors, leads to an estimate of the absolute peak power as high as 60 MW for the 300-ps pulses at 38 GHz. These results are compared with numerical simulations. The initial observation of 75-GHz, 10-15-MW radiation pulses with a duration of less than 150 ps is also reported.lld:pubmed
pubmed-article:11970143pubmed:languageenglld:pubmed
pubmed-article:11970143pubmed:journalhttp://linkedlifedata.com/r...lld:pubmed
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pubmed-article:11970143pubmed:authorpubmed-author:HOMMlld:pubmed
pubmed-article:11970143pubmed:authorpubmed-author:RonaldKKlld:pubmed
pubmed-article:11970143pubmed:authorpubmed-author:SergeevA SASlld:pubmed
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pubmed-article:11970143pubmed:authorpubmed-author:CrossA WAWlld:pubmed
pubmed-article:11970143pubmed:authorpubmed-author:GinzburgN SNSlld:pubmed
pubmed-article:11970143pubmed:authorpubmed-author:PeskovN YNYlld:pubmed
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pubmed-article:11970143pubmed:authorpubmed-author:ShpakV GVGlld:pubmed
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pubmed-article:11970143pubmed:authorpubmed-author:UlmaskulovM...lld:pubmed
pubmed-article:11970143pubmed:issnTypePrintlld:pubmed
pubmed-article:11970143pubmed:volume60lld:pubmed
pubmed-article:11970143pubmed:ownerNLMlld:pubmed
pubmed-article:11970143pubmed:authorsCompleteYlld:pubmed
pubmed-article:11970143pubmed:pagination3297-304lld:pubmed
pubmed-article:11970143pubmed:dateRevised2003-11-3lld:pubmed
pubmed-article:11970143pubmed:year1999lld:pubmed
pubmed-article:11970143pubmed:articleTitleGeneration of powerful subnanosecond microwave pulses by intense electron bunches moving in a periodic backward wave structure in the superradiative regime.lld:pubmed
pubmed-article:11970143pubmed:affiliationInstitute of Applied Physics, RAS, 603600 Nizhny Novgorod, Russia.lld:pubmed
pubmed-article:11970143pubmed:publicationTypeJournal Articlelld:pubmed