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Title: Laser-induced short-range disorder in aluminum revealed by ultrafast electron diffuse scattering

We report ultrafast electron diffuse scattering intensity (DSI) measurement in order to study the structural response of aluminum to femtosecond laser excitation. In this measurement, the evolutions of DSI and Bragg peak intensities after the laser excitation are measured and compared in the time domain. Their differences suggest that two kinds of lattice disorder, short-range and long-range, are triggered simultaneously. The former, induced by electron excitation, arises and decays with a faster rate than the latter which is subject to lattice heating. The results presented show that the time-resolved DSI measurements provide complementary insights to the ultrafast diffraction measurements.
Authors:
; ; ;  [1] ;  [2] ; ;  [1] ;  [3]
  1. Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China)
  2. Physics Department and National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310 (United States)
  3. (China)
Publication Date:
OSTI Identifier:
22253877
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 23; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM; BRAGG CURVE; DIFFUSE SCATTERING; ELECTRONS; EXCITATION; LASERS; TIME RESOLUTION