High quality single shot diffraction patterns using ultrashort megaelectron volt electron beams from a radio frequency photoinjector

Journal Article · Fri Jan 15 04:00:00 EST 2010 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3292683· OSTI ID:22053613

Musumeci, P; Moody, J T; Scoby, C M; Gutierrez, M S ^[1]; Bender, H A; Wilcox, N S ^[2]

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1. Department of Physics and Astronomy, UCLA, Los Angeles, California 90095 (United States)
2. National Security Technologies, LLC, Los Alamos Operations, Los Alamos, New Mexico 87544 (United States)

Single shot diffraction patterns using a 250-fs-long electron beam have been obtained at the UCLA Pegasus laboratory. High quality images with spatial resolution sufficient to distinguish closely spaced peaks in the Debye-Scherrer ring pattern have been recorded by scattering the 1.6 pC 3.5 MeV electron beam generated in the rf photoinjector off a 100-nm-thick Au foil. Dark current and high emittance particles are removed from the beam before sending it onto the diffraction target using a 1 mm diameter collimating hole. These results open the door to the study of irreversible phase transformations by single shot MeV electron diffraction.

• OSTI ID: 22053613
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 1 Vol. 81; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CURRENTS
ELECTRON BEAMS
ELECTRON DIFFRACTION
FOILS
GOLD
MEV RANGE
PHASE TRANSFORMATIONS
RADIOWAVE RADIATION
RF SYSTEMS
SPATIAL RESOLUTION