Preparation and characterization of nanometer‐thin freestanding polymer foils for laser‐ion acceleration |
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| Authors: | Bastian Aurand Bentsian Elkin Lars‐Oliver Heim Bettina Lommel Birgit Kindler Marilena Tomut Christian Rödel Stephan Kuschel Oliver Jäckel Jakob Barz Thomas Kuehl |
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| Institution: | 1. Department of Physics, Lund University, , 22100, Lund Sweden;2. Helmholtzzentrum für Schwerionenforschung GmbH, , 64921, Darmstadt Germany;3. Fraunhofer Institut für Grenzfl?chen-und Bioverfahrenstechnik, , 70569, Stuttgart Germany;4. Center for Smart Interfaces, , 64287, Darmstadt Germany;5. Helmholtz‐Institut Jena, , 07743, Jena Germany |
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| Abstract: | We report on the production and characterization of polymer‐based ultra‐thin (sub 10 nm) foils suited for experiments on laser‐ion acceleration in the regime of radiation pressure acceleration. Beside the remarkable mechanical stability compared with commonly used diamond‐like‐carbon foils, a very homogeneous layer thickness and a small surface roughness have been achieved. We describe the technical issues of the production process as well as detailed studies of the mechanical stability and surface roughness tests. The capability of producing uniform targets of large area is essential for advanced laser‐ion acceleration projects which are dealing with high repetition rate and extended measurement series, but might also be useful for other applications which require ultra‐thin and freestanding substrates of high quality. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2013 , 51, 1355–1360 |
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| Keywords: | atomic force microscopy (AFM) laser‐ion acceleration plasma physics separation techniques targets thin films ultra‐thin‐polymer foils |
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