Time-resolved x-ray laser induced photoelectron spectroscopy of isochoric heated copper
- Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)
Time-resolved x-ray photoelectron spectroscopy is used to probe the nonsteady-state evolution of the valence band electronic structure of laser heated ultrathin (50 nm) copper. A metastable phase is studied using a 527 nm wavelength 400 fs laser pulse containing 0.1-2.5 mJ laser energy focused in a large 500x700 {mu}m{sup 2} spot to create heated conditions of 0.07-1.8x10{sup 12} W cm{sup -2} intensity. Valence band photoemission spectra are presented showing the changing occupancy of the Cu 3d level with heating are presented. These picosecond x-ray laser induced time-resolved photoemission spectra of laser-heated ultrathin Cu foil show dynamic changes in the electronic structure. The ultrafast nature of this technique lends itself to true single-state measurements of shocked and heated materials.
- OSTI ID:
- 20709829
- Journal Information:
- Applied Physics Letters, Vol. 87, Issue 15; Other Information: DOI: 10.1063/1.2093938; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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