Response of molecular solids to ultra-intense femtosecond soft x-ray pulses

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F09%3A00335967" target="_blank" >RIV/68378271:_____/09:00335967 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Response of molecular solids to ultra-intense femtosecond soft x-ray pulses
Original language description
Ultra-fast soft x-ray lasers have opened a new area of laser-matter interactions which in most cases differ from the well understood interaction of UV-vis radiation with solid targets. The photon energy >30eV essentially exceeds the width of band gap inany known material and excites the electrons from the deep atomic and valence levels directly to the conduction band. Both thermal and non-thermal phenomena can occur in such a material being caused by electron thermalization and bond breaking, respectively. We report the first observation of non-thermal 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 an atomic-force microscope (AFM) enabling the visualization of mild surface modifications caused by the desorption.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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