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Non-thermal desorption/ablation of molecular solids induced by ultra-short soft x-ray pulses
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SYSNO ASEP 0334060 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Non-thermal desorption/ablation of molecular solids induced by ultra-short soft x-ray pulses Title Netepelná desorpce/ablace molekulárních pevných látek indukovaná ultra-krátkými pulsy měkkého rentgenového záření Author(s) Chalupský, Jaromír (FZU-D) RID, ORCID
Juha, Libor (FZU-D) RID, ORCID, SAI
Hájková, Věra (FZU-D) RID, ORCID
Cihelka, Jaroslav (FZU-D)
Vyšín, Luděk (FZU-D) RID, ORCID
Gautier, J. (FR)
Hajdu, J. (SE)
Hau-Riege, S.P. (US)
Jurek, M. (PL)
Krzywinski, J. (PL)
London, R.A. (US)
Papalazarou, E. (FR)
Pelka, J. B. (PL)
Rey, G. (FR)
Sebban, S. (FR)
Sobierajski, R. (PL)
Stojanovic, N. (DE)
Tiedtke, K. (DE)
Toleikis, S. (DE)
Tschentscher, T. (DE)
Valentin, C. (FR)
Wabnitz, H. (DE)
Zeitoun, P. (FR)Source Title Optics Express. - : Optical Society of America - ISSN 1094-4087
Roč. 17, č. 1 (2009), s. 208-217Number of pages 10 s. Language eng - English Country US - United States Keywords x-ray laser ; high-order harmonics ; free-electron laser ; desorption ; ablation ; organic polymer Subject RIV BH - Optics, Masers, Lasers R&D Projects KAN300100702 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) LC510 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LC528 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LA08024 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) IAA400100701 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z10100523 - FZU-D (2005-2011) UT WOS 000262220300024 DOI 10.1364/OE.17.000208 Annotation We report the first observation of single-shot soft x-ray laser induced desorption occurring below the ablation threshold in a thin layer of poly ( methyl methacrylate) - PMMA. Irradiated by the focused beam from the Free-electron LASer in Hamburg ( FLASH) at 21.7nm, the samples have been investigated by atomic-force microscope (AFM) enabling the visualization of mild surface modifications caused by the desorption. A model describing non-thermal desorption and ablation has been developed and used to analyze single-shot imprints in PMMA. An intermediate regime of materials removal has been found, confirming model predictions. We also report below-threshold multiple-shot desorption of PMMA induced by high-order harmonics (HOH) at 32nm. Short-time exposure imprints provide sufficient information about transverse beam profile in HOH's tight focus whereas long-time exposed PMMA exhibits radiation-initiated surface hardening making the beam profile measurement infeasible. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2010
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