Experimental demonstration of longitudinal wiggler free-electron laser

I. Shraga, Y. Goren, C. Leibovitch, S. Eckhouse, A. Gover

Research output: Contribution to journalArticlepeer-review

Abstract

The lowbitron - a longitudinal wiggler beam interaction device - as a novel source of submillimeter wave radiation was proposed and analyzed theoretically by McMullin and Bekefi [Phys. Rev. A 25, 1826 (1982)]. This letter reports the first experimental measurements of lowbitron radiation obtained with a 740-kV, 400-A electron beam. The measured power spectra in the W-band range for different wiggler field periods agree with the lowbitron interaction theory. They match the intersection points of the shifted fast cyclotron wave dispersion relation ω-(k+kw)v0/ γ=0 and the TE01 electromagnetic waveguide mode.

Original languageEnglish
Pages (from-to)1412-1414
Number of pages3
JournalApplied Physics Letters
Volume49
Issue number21
DOIs
StatePublished - 1986

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