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Soft x-ray free electron laser microfocus for exploring matter under extreme conditions

Nelson, A. J. (author)
Toleikis, S. (author)
Chapman, H. (author)
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Bajt, S. (author)
Krzywinski, J. (author)
Chalupsky, J. (author)
Juha, L. (author)
Cihelka, J. (author)
Hajkova, V. (author)
Vysin, L. (author)
Burian, T. (author)
Kozlova, M. (author)
Fäustlin, R. R. (author)
Nagler, B. (author)
Vinko, S. M. (author)
Whitcher, T. (author)
Dzelzainis, T. (author)
Renner, O. (author)
Saksl, K. (author)
Khorsand, A. R. (author)
Heimann, P. A. (author)
Sobierajski, R. (author)
Klinger, D. (author)
Jurek, M. (author)
Pelka, J. (author)
Iwan, Bianca (author)
Uppsala universitet,Molekylär biofysik
Andreasson, Jakob (author)
Uppsala universitet,Molekylär biofysik
Timneanu, Nicusor (author)
Uppsala universitet,Molekylär biofysik
Fajardo, M. (author)
Wark, J. S. (author)
Riley, D. (author)
Tschentscher, T. (author)
Hajdu, Janos (author)
Uppsala universitet,Molekylär biofysik
Lee, R. W. (author)
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 (creator_code:org_t)
2009
2009
English.
In: Optics Express. - 1094-4087. ; 17:20, s. 18271-18278
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We have focused a beam (BL3) of FLASH (Free-electron LASer in Hamburg: lambda = 13.5 nm, pulse length 15 fs, pulse energy 10-40 mu J, 5Hz) using a fine polished off-axis parabola having a focal length of 270 mm and coated with a Mo/Si multilayer with an initial reflectivity of 67% at 13.5 nm. The OAP was mounted and aligned with a picomotor controlled six-axis gimbal. Beam imprints on poly(methyl methacrylate) -PMMA were used to measure focus and the focused beam was used to create isochoric heating of various slab targets. Results show the focal spot has a diameter of <= 1 mu m. Observations were correlated with simulations of best focus to provide further relevant information.

Keyword

TECHNOLOGY
TEKNIKVETENSKAP

Publication and Content Type

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art (subject category)

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