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Numrering	Referens	Omslagsbild	Hitta
1.	Chalupsky, J., et al. (författare) Characteristics of focused soft X-ray free-electron laser beam determined by ablation of organic molecular solids 2007 Ingår i: Optics Express. - 1094-4087. ; 15:10, s. 6036-6043 Tidskriftsartikel (refereegranskat)abstract A linear accelerator based source of coherent radiation, FLASH (Free-electron LASer in Hamburg) provides ultra-intense femtosecond radiation pulses at wavelengths from the extreme ultraviolet (XUV; lambda< 100nm) to the soft X-ray (SXR; lambda<30nm) spectral regions. 25-fs pulses of 32-nm FLASH radiation were used to determine the ablation parameters of PMMA - poly ( methyl methacrylate). Under these irradiation conditions the attenuation length and ablation threshold were found to be (56.9 +/- 7.5) nm and similar to 2 mJ center dot cm(-2), respectively. For a second wavelength of 21.7 nm, the PMMA ablation was utilized to image the transverse intensity distribution within the focused beam at mu m resolution by a method developed here.
2.	Hau-Riege, S. P., et al. (författare) Damage threshold of inorganic solids under free-electron-laser irradiation at 32.5 nm wavelength 2007 Ingår i: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 90:17, s. 173128- Tidskriftsartikel (refereegranskat)abstract Samples of B4C, amorphous C, chemical-vapor-deposition-diamond C, Si, and SiC were exposed to single 25 fs long pulses of 32.5 nm free-electron-laser radiation at fluences of up to 2.2 J/cm(2). The samples were chosen as candidate materials for x-ray free-electron-laser optics. It was found that the threshold for surface damage is on the order of the fluence required for thermal melting. For larger fluences, the crater depths correspond to temperatures on the order of the critical temperature, suggesting that the craters are formed by two-phase vaporization.
3.	Hau-Riege, S. P., et al. (författare) Force Field Benchmark of Organic Liquids : Density, Enthalpy of Vaporization, Heat Capacities, Surface Tension, Isothermal Compressibility, Volumetric Expansion Coefficient, and Dielectric Constant 2007 Ingår i: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 98:14, s. 145502- Tidskriftsartikel (refereegranskat)abstract At the recently built FLASH x-ray free-electron laser, we studied the reflectivity of Si/C multilayers with fluxes up to 3×1014W/cm2. Even though the nanostructures were ultimately completely destroyed, we found that they maintained their integrity and reflectance characteristics during the 25-fs-long pulse, with no evidence for any structural changes over lengths greater than 3Å. This experiment demonstrates that with intense ultrafast pulses, structural damage does not occur during the pulse, giving credence to the concept of diffraction imaging of single macromolecules.

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Typ av publikation: tidskriftsartikel (3)

Typ av innehåll: refereegranskat (3)

Författare/redaktör: Caleman, Carl (3); Juha, L. (3); Krzywinski, J. (3); Hau-Riege, S. P. (3); Bergh, Magnus (3); Sokolowski-Tinten, K (3); visa fler...; Kuba, J. (3); London, R. A. (3); Nietubyc, R. (3); Sobierajski, R. (3); Stojanovic, N. (3); Toleikis, S. (3); Chalupsky, J. (2); Hajkova, V. (2); Tschentscher, T. (2); Cihelka, J. (2); Krasa, J. (2); Velyhan, A. (2); Bionta, R. M. (2); Jurek, M. (2); Pelka, J. B. (2); Tiedtke, K. (2); Wabnitz, H. (2); Zastrau, U. (2); Baker, S. (1); Hajdu, Janos (1); Bajt, S. (1); Chapman, H. N. (1); Tschentscher, Th (1); Koptyaev, S. (1); Chapman, H. (1); Meyer-ter-Vehn, J. (1); Tronnier, A. (1); Tschentscher, Thomas (1); Gullikson, E. (1); McKernan, M. A. (1); Baker, S. L. (1); Spiller, E. (1); Bionta, R. (1); Kjornrattanawanich, ... (1); Plonjes, E. (1); visa färre...

Lärosäte: Uppsala universitet (3)Ta bort avgränsningen

Språk: Engelska (3)

Forskningsämne (UKÄ/SCB): Naturvetenskap (3)

År: 2007 (3)

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