High quality single shot diffraction patterns using ultrashort megaelectron volt electron beams from a radio frequency photoinjector
Journal Article
·
· Review of Scientific Instruments
- Department of Physics and Astronomy, UCLA, Los Angeles, California 90095 (United States)
- 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, Vol. 81, Issue 1; Other Information: (c) 2010 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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