- We present a highly flexible and portable instrument to perform pump-probe spectroscopy with an optical and an X-ray pulse in the gas phase. The so-called URSA-PQ (German for ‘Ultraschnelle Röntgenspektroskopie zur Abfrage der Photoenergiekonversion an Quantensystemen’, Engl. ‘ultrafast X-ray spectroscopy for probing photoenergy conversion in quantum systems’) instrument is equipped with a magnetic bottle electron spectrometer (MBES) and tools to characterize the spatial and temporal overlap of optical and X-ray laser pulses. Its adherence to the CAMP instrument dimensions allows for a wide range of sample sources as well as other spectrometers to be included in the setup. We present the main design and technical features of the instrument. The MBES performance was evaluated using Kr M4,5NN Auger lines using backfilled Kr gas, with an energy resolution ΔE/E ≅ 1/40 in the integrating operative mode. The time resolution of the setup at FLASH 2 FL 24 has been characterized with the help of an experiment on 2-thiouracil that is insertedWe present a highly flexible and portable instrument to perform pump-probe spectroscopy with an optical and an X-ray pulse in the gas phase. The so-called URSA-PQ (German for ‘Ultraschnelle Röntgenspektroskopie zur Abfrage der Photoenergiekonversion an Quantensystemen’, Engl. ‘ultrafast X-ray spectroscopy for probing photoenergy conversion in quantum systems’) instrument is equipped with a magnetic bottle electron spectrometer (MBES) and tools to characterize the spatial and temporal overlap of optical and X-ray laser pulses. Its adherence to the CAMP instrument dimensions allows for a wide range of sample sources as well as other spectrometers to be included in the setup. We present the main design and technical features of the instrument. The MBES performance was evaluated using Kr M4,5NN Auger lines using backfilled Kr gas, with an energy resolution ΔE/E ≅ 1/40 in the integrating operative mode. The time resolution of the setup at FLASH 2 FL 24 has been characterized with the help of an experiment on 2-thiouracil that is inserted via the instruments’ capillary oven. We find a time resolution of 190 fs using the molecular 2p photoline shift and attribute this to different origins in the UV-pump—the X-ray probe setup.…
MetadatenVerfasserangaben: | Jan Metje, Fabiano LeverORCiD, Dennis MayerORCiDGND, Richard James Squibb, Matthew Scott RobinsonORCiD, Mario NiebuhrORCiDGND, Raimund FeifelGND, Stefan DüstererORCiDGND, Markus GührORCiDGND |
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URN: | urn:nbn:de:kobv:517-opus4-483073 |
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DOI: | https://doi.org/10.25932/publishup-48307 |
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ISSN: | 1866-8372 |
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Titel des übergeordneten Werks (Deutsch): | Postprints der Universität Potsdam : Mathematisch Naturwissenschaftliche Reihe |
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Untertitel (Englisch): | A Mobile and Flexible Pump-Probe Instrument for Gas Phase Samples at the FLASH Free Electron Laser |
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Schriftenreihe (Bandnummer): | Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe (1016) |
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Publikationstyp: | Postprint |
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Sprache: | Englisch |
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Datum der Erstveröffentlichung: | 18.11.2020 |
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Erscheinungsjahr: | 2020 |
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Veröffentlichende Institution: | Universität Potsdam |
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Datum der Freischaltung: | 18.11.2020 |
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Freies Schlagwort / Tag: | X-ray probe; gas phase electron spectroscopy; molecular dynamics |
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Ausgabe: | 1016 |
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Seitenanzahl: | 15 |
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Quelle: | Applied Sciences 10 (2020) 21, 7882 DOI: 10.3390/app10217882 |
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Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
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DDC-Klassifikation: | 6 Technik, Medizin, angewandte Wissenschaften / 60 Technik / 600 Technik, Technologie |
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Peer Review: | Referiert |
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Publikationsweg: | Open Access / Green Open-Access |
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Lizenz (Deutsch): | CC-BY - Namensnennung 4.0 International |
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Externe Anmerkung: | Bibliographieeintrag der Originalveröffentlichung/Quelle |
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