Electron energy spectral measurements in the large-slippage regime

W. A. Gillespie, A.M. MacLeod, P.F. Martin, G.M.H. Knippels, A.F.G. van der Meer, E.H. Haselhoff, P.W. van Amersfoort

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    Abstract

    Time resolved electron spectra have been measured at FELIX while lasing in the 8-30 µm range. Over this wavelength range the slippage, given by the longitudinal coupling parameter, µ = N? s, varies considerably (0.5 <µ <3). Limit-cycle behaviour, previously observed in optical spectra [1], is also evident in the electron spectra. Efficiencies of up to 1.6% have been measured. In these cases the output electron energy distribution has a total width of more than 14%! Also presented are measurements of the electron and optical spectra in the case when the electron energy is swept at a rate of 0.3%/µs while lasing at 30 µm.
    Original languageEnglish
    Pages (from-to)232-235
    Number of pages4
    JournalNuclear Instruments and Methods in Physics Research, A
    Volume358
    Issue number1-3
    DOIs
    Publication statusPublished - 11 Apr 1995

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    Gillespie, W. A., MacLeod, A. M., Martin, P. F., Knippels, G. M. H., van der Meer, A. F. G., Haselhoff, E. H., & van Amersfoort, P. W. (1995). Electron energy spectral measurements in the large-slippage regime. Nuclear Instruments and Methods in Physics Research, A, 358(1-3), 232-235. https://doi.org/10.1016/0168-9002(94)01564-3