NDLI: Some unusual properties of the cylindrical Brillouin flow

Content Provider	IEEE Xplore Digital Library
Author	Simon, D.H. Lau, Y.Y. Franzi, M. French, D.M. Gilgenbach, R.M. Tang, W. Hoff, B. Cartwright, K.L. Luginsland, J.W.
Copyright Year	2011
Description	Author affiliation: Air Force Office of Scientific Research, Arlington, VA, USA (Luginsland, J.W.) \|\| Air Force Research laboratory, Kirtland AFB, NM, USA (Tang, W.; Hoff, B.; Cartwright, K.L.) \|\| University of Michigan, Ann Arbor, 48109 USA (Simon, D.H.; Lau, Y.Y.; Franzi, M.; French, D.M.; Gilgenbach, R.M.)
Abstract	It was recently found that the Buneman-Hartree (B-H) condition in a cylindrical relativistic magnetron assumes a very different form depending on the single particle model or the Brillouin flow model [1]. Such a difference is always present, whether the voltage is relativistic or not. These two models yield the same result only in the limit of a planar magnetron. As the difference between the conventional and the inverted magnetron arises only in a cylindrical geometry, the cylindrical Brillouin flow is of renewed interest because the inverted magnetron exhibits the negative mass instability [2], which is utilized in our recent invention of the recirculating planar magnetron [3,4]. We find that there is yet another novel property of the cylindrical Brillouin flow. If we replace the gap voltage by the spatially varying scalar potential, and the magnetic field by the spatially varying vector potential, both the B-H condition and the Hull cutoff condition are satisfied at all radii within the cylindrical Brillouin flow if the phase velocity of the wave in the B-H condition is replaced by the local electron flow velocity. This property does not seem to have been noted previously, and its implications are being explored. The negative mass effects in the Brillouin flow in the inverted magnetron configuration, as well as the role played by the slow wave structure at the anode, will also be studied.
Starting Page	1
Ending Page	1
File Size	51486
Page Count	1
File Format	PDF
ISBN	9781612843308
ISSN	07309244
e-ISBN	9781612843292
e-ISBN	9781612843285
DOI	10.1109/PLASMA.2011.5993336
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	USA Councils
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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