BEAM-BREAKUP INSTABILITY IN AN ANNULAR ELECTRON-BEAM

Authors
LAU YY LUGINSLAND JW
Citation
Yy. Lau et Jw. Luginsland, BEAM-BREAKUP INSTABILITY IN AN ANNULAR ELECTRON-BEAM, Journal of applied physics, 74(9), 1993, pp. 5877-5879
Citations number
24
Categorie Soggetti
Physics, Applied
Journal title
Journal of applied physics → ACNP
ISSN journal
00218979
Volume
74
Issue
9
Year of publication
1993
Pages
5877 - 5879
Database
ISI
SICI code
0021-8979(1993)74:9<5877:BIIAAE>2.0.ZU;2-G
Abstract
It is shown that an annular electron beam may carry six times as much current as a pencil beam for the same beam breakup (BBU) growth. This finding suggests that the rf magnetic field of the breakup mode is far more important than the rf electric field in the excitation of BBU. A proof-of-principle experiment is suggested, and the implications expl ored.