Temperatures following x-ray free-electron-laser heating of thin low- and medium-Z solid targets
- Department of Physics, University of York, York YO10 5DD (United Kingdom)
The absorption of ultrashort (100 fs or shorter) bursts of x-ray free-electron laser (XFEL) radiation by thin (less than an attenuation length) solid carbon and iron target is modeled. Photon energies of several hundred eV to several keV and intensities of 10{sup 16} to 10{sup 18} W cm{sup -2} are considered. We calculate carbon and iron temperatures at sufficient times after XFEL irradiation that local thermodynamic equilibrium has been established and electron-ion thermalization has occurred, assuming classical heat capacities. It is shown that there is an optimum photon energy for maximizing temperatures. Constant irradiation at 10{sup 18} W cm{sup -2} for 100 fs with photons of 2 and 3 keV, for example, is predicted to result in a temperature of over 500 eV in solid density carbon and over 1 keV in solid density iron, respectively.
- OSTI ID:
- 21532195
- Journal Information:
- Physics of Plasmas, Vol. 18, Issue 1; Other Information: DOI: 10.1063/1.3546031; (c) 2011 American Institute of Physics; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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