Electron-beam energy spectral measurements were made on a tapered-wiggler free- electron laser amplifier. A 19-MeV electron beam from a traveling-wave linear accelerator interacted in a tapered wiggler with an intense 10.6-micron CO2 laser beam. The electron spectra show a 4 percent net energy loss and a 9 percent peak loss. Measurements of electron energy spectra, extraction efficiency as a function of electron-beam energy, and extraction efficiency as a function of optical power are presented and are consistent with theoretically predicted performance. (Author) Source of Abstract (Subfile): AIAA/TIS Descriptors: ‘CARBON DIOXIDE LASERS; ‘ELECTRON ENERGY; ‘FREE ELECTRON LASERS; ‘SPECTRAL ENERGY DISTRIBUTION; ‘WIGGLER MAGNETS; ENERGY CONVERSION EFFICIENCY; ENERGY DISSIPATION; LASER OUTPUTS; LINEAR ACCELERATORS; TRAVELING WAVES Subject Classification: 7536 Lasers & Masers (1975- ) Features characterizing bunching and energy exchange in a relativistic multicavity klystron Osobennosti gruppirovaniia i energoobmena v reliativistskom mnogorezonatornom tor- nom klistrone SANDALOV: A. N.; TEREBILOV, A.V. Radiotekhnika i Elektronika (ISSN 0033-8494), vol. 28, Sept. 1983, p. 1803-1810. In Russian. 14 Refs. Language: Russian. Country of Publication: USSR Document Type: JOURNAL ARTICLE Most documents available from AI A A Technical Library Journal Announcement: IAA8401 A theoretical analysis is made of the bunching of electrons and energy exchange between the electron beam and electromagnetic field exchange between the electron beam and electromagnetic field in a relativistic multicavity klystron. A similarity principle is obtained which makes it possible to calculate the parameters of relativistic bunchers on the basis of a high-efficiency non-relativistic analog. Numerical-simulation results show that high efficiencies (about 80 percent) can be attained in relativistic multicavity klystrons. (B. J.) Source of Abstract (Subfile): AIAA/TIS Descriptors: ‘ELECTRON ACCELERATORS; ‘ELECTRON BUNCHING; ‘ENERGY TRANSFER; ‘KLYSTRONS; ‘RELATIVISTIC ELECTRON BEAMS; CAVITY RESONATORS; ELECTROMAGNETIC INTERACTIONS; ELECTRON TRAJECTORIES; ENERGY CONVERSION EFFICIENCY; SIMILARITY THEOREM Subject Classification: 7533 Electronics & Electrical Engineering (1975- ) Magnetic mirror fusion power systems GORDON, J. D. (TRW Energy Systems Group); LOGAN, B. G. California Univ., Livermore. Lawrence Livermore Lab. Corp. Source Code: CD026548 Sept. 1983. 5P.
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