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Browse Journals & Magazines > Applied Physics Letters ...> Volume:92 Issue:21 Help

Free-electron maser based on a cavity with two- and one-dimensional distributed feedback

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8 Author(s)
Konoplev, I.V. ; SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom ; Cross, A.W. ; MacInnes, P. ; He, W.
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The study of a coaxial free-electron maser (FEM) based on two-dimensional (2D) and one-dimensional (1D) distributed feedback, driven by a 70 mm diameter, annular electron beam is presented. A new cavity formed with 2D and 1D periodic lattices, positioned at the input and output of the interaction region, respectively, was used. It has been demonstrated that 2D distributed feedback in the input mirror allowed 8 mm radiation emitted from different parts of the electron beam to be synchronized. The FEM operating in the 35.9–38.9 GHz frequency region generated 65 MW, 150 ns duration millimeter wave pulses which contained ∼10 J of energy in the pulse.

Published in:
Applied Physics Letters  (Volume:92 ,  Issue: 21 )

Date of Publication: May 2008

Page(s):
211501 - 211501-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.2924313
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
May 2008

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