Author: Kogar, A.
Paper Title Page
TUXD6 Dual Radiofrequency Cavity Based Monochromatization for High Resolution Electron Energy Loss Spectroscopy 278
 
  • A.V. Kulkarni, P.E. Denham, A. Kogar, P. Musumeci
    UCLA, Los Angeles, USA
  
  Re­duc­ing the en­ergy spread of elec­tron beams can en­able break­through ad­vances in elec­tron en­ergy loss spec­tro­scopic in­ves­ti­ga­tions of solid state sam­ples where char­ac­ter­is­tic ex­ci­ta­tions typ­i­cally have en­ergy scales on the order of meV. In con­ven­tional elec­tron sources the en­ergy spread is lim­ited by the emis­sion process and typ­i­cally on the order of a frac­tion of an eV. State-of-the-art en­ergy res­o­lu­tion can only be achieved after sig­nif­i­cant losses in the mono­chrom­a­ti­za­tion process. Here we pro­pose to take ad­van­tage of pho­toe­mis­sion from ul­tra­short laser pulses (~40 fs) so that after a lon­gi­tu­di­nal phase space ma­nip­u­la­tion that trades pulse du­ra­tion for en­ergy spread, the en­ergy spread can be re­duced by more than one order of mag­ni­tude. The scheme uses two RF cav­i­ties to ac­com­plish this goal and can be im­ple­mented on a rel­a­tively short (~ 1m) beam­line. An­a­lyt­i­cal pre­dic­tions and re­sults of 3D self con­sis­tent beam dy­nam­ics sim­u­la­tions are pre­sented to sup­port the find­ings.  
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DOI • reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-TUXD6  
About • Received ※ 03 August 2022 — Revised ※ 08 August 2022 — Accepted ※ 11 August 2022 — Issue date ※ 18 August 2022
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