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Title: Sacrificial Tamper Slows Down Sample Explosion in FLASH Diffraction Experiments

Journal Article · · Physical Review Letters
;  [1]; ;  [2];  [1]; ;  [3]; ; ; ;  [4];  [5];  [6];  [6]
  1. Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California, 94550 (United States)
  2. SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025 (United States)
  3. HASYLAB, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg (Germany)
  4. Laboratory of Molecular Biophysics, Department of Cell and Molecular Biology, Uppsala University, Husargatan 3, Box 596, SE-75124 Uppsala (Sweden)
  5. University of California, Berkeley, 253 Cory Hall, Berkeley, California 94720 (United States)
  6. Center for Free Electron Laser Science, DESY, Notkestrasse 85, 22607 Hamburg (Germany)

Intense and ultrashort x-ray pulses from free-electron lasers open up the possibility for near-atomic resolution imaging without the need for crystallization. Such experiments require high photon fluences and pulses shorter than the time to destroy the sample. We describe results with a new femtosecond pump-probe diffraction technique employing coherent 0.1 keV x rays from the FLASH soft x-ray free-electron laser. We show that the lifetime of a nanostructured sample can be extended to several picoseconds by a tamper layer to dampen and quench the sample explosion, making <1 nm resolution imaging feasible.

OSTI ID:
21386790
Journal Information:
Physical Review Letters, Vol. 104, Issue 6; Other Information: DOI: 10.1103/PhysRevLett.104.064801; (c) 2010 The American Physical Society; ISSN 0031-9007
Country of Publication:
United States
Language:
English