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This content will become publicly available on November 10, 2016

Title: GHz laser-free time-resolved transmission electron microscopy: A stroboscopic high-duty-cycle method

In this study, a device and a method for producing ultrashort electron pulses with GHz repetition rates via pulsing an input direct current (dc) electron beam are provided. The device and the method are based on an electromagnetic-mechanical pulser (EMMP) that consists of a series of transverse deflecting cavities and magnetic quadrupoles. The EMMP modulates and chops the incoming dc electron beam and converts it into pico- and sub-pico-second electron pulse sequences (pulse trains) at >1 GHz repetition rates, as well as controllably manipulates the resulting pulses. Ultimately, it leads to negligible electron pulse phase-space degradation compared to the incoming dc beam parameters. The temporal pulse length and repetition rate for the EMMP can be continuously tunable over wide ranges.
 [1] ;  [2] ;  [1] ;  [1] ;  [1] ;  [3] ;  [4]
  1. Euclid TechLabs, Bolingbrook, IL (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Integrated Dynamic Electron Solutions, Pleasanton, CA (United States)
  4. National Institute of Standards and Technology, Gaithersburg, MD (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 0304-3991; R&D Project: MA015MACA; KC0201010
Grant/Contract Number:
SC00112704; SC0013121; SC0012704
Accepted Manuscript
Journal Name:
Additional Journal Information:
Journal Volume: 161; Journal Issue: C; Journal ID: ISSN 0304-3991
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; GHz; stroboscopic; deflecting cavity; transmission electron microscopy; time-resolved; ultrafast