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  1. AU="Stebel, Luigi"
  2. AU=Amico Patrizia
  3. AU="Kojev, Aslan"
  4. AU="Zhiyu Wang"
  5. AU="Shannon C Peyton"
  6. AU="Shiltsev, V."
  7. AU="Edward S. Debnam"
  8. AU="Freeston, Sarah L"
  9. AU="Bertolucci, S."
  10. AU="de Barros, Rosires M B"
  11. AU="Carr, Crystal C"
  12. AU="Davies, Mark Lloyd"
  13. AU=St Gelais Corine
  14. AU=Engstrom Malitta
  15. AU="Hongo, Akane"
  16. AU="Krykorková, I"
  17. AU=Yan Bing
  18. AU="Nakos, Konstantinos"
  19. AU="Schreiner, Ryan"
  20. AU=Pltz T
  21. AU="Akhmanova, Anna" AU="Akhmanova, Anna"
  22. AU="Goretsky, Anton"
  23. AU="Cordoza, Makayla L"
  24. AU=Midoux Patrick AU=Midoux Patrick
  25. AU="Mundt, H M"
  26. AU=Tsivitse Susan

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Treffer 1 - 6 von insgesamt 6

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  1. Artikel ; Online: Photoionization Dynamics of the Tetraoxo Complexes OsO

    Schio, Luca / Alagia, Michele / Toffoli, Daniele / Decleva, Piero / Richter, Robert / Schalk, Oliver / Thomas, Richard D / Mucke, Melanie / Salvador, Federico / Bertoch, Paolo / Benedetti, Davide / Dri, Carlo / Cautero, Giuseppe / Sergo, Rudi / Stebel, Luigi / Vivoda, Davide / Stranges, Stefano

    Inorganic chemistry

    2020  Band 59, Heft 10, Seite(n) 7274–7282

    Abstract: The photoionization dynamics of ... ...

    Abstract The photoionization dynamics of OsO
    Sprache Englisch
    Erscheinungsdatum 2020-04-28
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 1484438-2
    ISSN 1520-510X ; 0020-1669
    ISSN (online) 1520-510X
    ISSN 0020-1669
    DOI 10.1021/acs.inorgchem.0c00683
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: Trace-element XAFS sensitivity: a stress test for a new XRF multi-detector.

    Carlomagno, Ilaria / Antonelli, Matias / Aquilanti, Giuliana / Bellutti, Pierluigi / Bertuccio, Giuseppe / Borghi, Giacomo / Cautero, Giuseppe / Cirrincione, Daniela / de Giudici, Giovanni / Ficorella, Francesco / Gandola, Massimo / Giuressi, Dario / Medas, Daniela / Mele, Filippo / Menk, Ralf H / Olivi, Luca / Orzan, Giulio / Picciotto, Antonino / Podda, Francesca /
    Rachevski, Alexandre / Rashevskaya, Irina / Stebel, Luigi / Vacchi, Andrea / Zampa, Gianluigi / Zampa, Nicola / Zorzi, Nicola / Meneghini, Carlo

    Journal of synchrotron radiation

    2021  Band 28, Heft Pt 6, Seite(n) 1811–1819

    Abstract: X-ray absorption fine-structure (XAFS) spectroscopy can assess the chemical speciation of the elements providing their coordination and oxidation state, information generally hidden to other techniques. In the case of trace elements, achieving a good ... ...

    Abstract X-ray absorption fine-structure (XAFS) spectroscopy can assess the chemical speciation of the elements providing their coordination and oxidation state, information generally hidden to other techniques. In the case of trace elements, achieving a good quality XAFS signal poses several challenges, as it requires high photon flux, counting statistics and detector linearity. Here, a new multi-element X-ray fluorescence detector is presented, specifically designed to probe the chemical speciation of trace 3d elements down to the p.p.m. range. The potentialities of the detector are presented through a case study: the speciation of ultra-diluted elements (Fe, Mn and Cr) in geological rocks from a calcareous formation related to the dispersal processes from Ontong (Java) volcanism (mid-Cretaceous). Trace-elements speciation is crucial in evaluating the impact of geogenic and anthropogenic harmful metals on the environment, and to evaluate the risks to human health and ecosystems. These results show that the new detector is suitable for collecting spectra of 3d elements in trace amounts in a calcareous matrix. The data quality is high enough that quantitative data analysis could be performed to determine their chemical speciation.
    Mesh-Begriff(e) Ecosystem ; Exercise Test ; Humans ; Metals ; Trace Elements/analysis ; X-Ray Absorption Spectroscopy
    Chemische Substanzen Metals ; Trace Elements
    Sprache Englisch
    Erscheinungsdatum 2021-10-18
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 2021413-3
    ISSN 1600-5775 ; 0909-0495
    ISSN (online) 1600-5775
    ISSN 0909-0495
    DOI 10.1107/S1600577521008857
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel ; Online: Experimental and Theoretical Photoemission Study of Indole and Its Derivatives in the Gas Phase.

    Plekan, Oksana / Sa'adeh, Hanan / Ciavardini, Alessandra / Callegari, Carlo / Cautero, Giuseppe / Dri, Carlo / Di Fraia, Michele / Prince, Kevin C / Richter, Robert / Sergo, Rudi / Stebel, Luigi / Devetta, Michele / Faccialà, Davide / Vozzi, Caterina / Avaldi, Lorenzo / Bolognesi, Paola / Castrovilli, Mattea Carmen / Catone, Daniele / Coreno, Marcello /
    Zuccaro, Fabio / Bernes, Elisa / Fronzoni, Giovanna / Toffoli, Daniele / Ponzi, Aurora

    The journal of physical chemistry. A

    2020  Band 124, Heft 20, Seite(n) 4115–4127

    Abstract: The valence and core-level photoelectron spectra of gaseous indole, 2,3-dihydro-7-azaindole, and 3-formylindole have been investigated using VUV and soft X-ray radiation supported by both an ab initio electron propagator and density functional theory ... ...

    Abstract The valence and core-level photoelectron spectra of gaseous indole, 2,3-dihydro-7-azaindole, and 3-formylindole have been investigated using VUV and soft X-ray radiation supported by both an ab initio electron propagator and density functional theory calculations. Three methods were used to calculate the outer valence band photoemission spectra: outer valence Green function, partial third order, and renormalized partial third order. While all gave an acceptable description of the valence spectra, the last method yielded very accurate agreement, especially for indole and 3-formylindole. The carbon, nitrogen, and oxygen 1s core-level spectra of these heterocycles were measured and assigned. The double ionization appearance potential for indole has been determined to be 21.8 ± 0.2 eV by C 1s and N 1s Auger photoelectron spectroscopy. Theoretical analysis identifies the doubly ionized states as a band consisting of two overlapping singlet states and one triplet state with dominant configurations corresponding to holes in the two uppermost molecular orbitals. One of the singlet states and the triplet state can be described as consisting largely of a single configuration, but other doubly ionized states are heavily mixed by configuration interactions. This work provides full assignment of the relative binding energies of the core level features and an analysis of the electronic structure of substituted indoles in comparison with the parent indole.
    Sprache Englisch
    Erscheinungsdatum 2020-05-11
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ISSN 1520-5215
    ISSN (online) 1520-5215
    DOI 10.1021/acs.jpca.0c02719
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: Characterization of the Percival detector with soft X-rays.

    Marras, Alessandro / Correa, Jonathan / Lange, Sabine / Vardanyan, Vahagn / Gerhardt, Tim / Kuhn, Manuela / Krivan, Frantisek / Shevyakov, Igor / Zimmer, Manfred / Hoesch, Moritz / Bagschik, Kai / Scholz, Frank / Guerrini, Nicola / Marsh, Ben / Sedgwick, Iain / Cautero, Giuseppe / Giuressi, Dario / Iztok, Gregori / Menk, Ralf H /
    Scarcia, Martin / Stebel, Luigi / Nicholls, Tim / Nichols, William / Pedersen, Ulrik K / Shikhaliev, Polad / Tartoni, Nicola / Hyun, HyoJung / Kim, SeongHan / Kim, KyungSook / Rah, SeungYu / Dawiec, Arkadiusz / Orsini, Fabienne / Pinaroli, Giovanni / Greer, Alan / Aplin, Steve / Jewell, April D / Jones, Todd J / Nikzad, Shouleh / Hoenk, Michael E / Okrent, Frank / Graafsma, Heinz / Wunderer, Cornelia B

    Journal of synchrotron radiation

    2021  Band 28, Heft Pt 1, Seite(n) 131–145

    Abstract: In this paper the back-side-illuminated Percival 2-Megapixel (P2M) detector is presented, along with its characterization by means of optical and X-ray photons. For the first time, the response of the system to soft X-rays (250 eV to 1 keV) is presented. ...

    Abstract In this paper the back-side-illuminated Percival 2-Megapixel (P2M) detector is presented, along with its characterization by means of optical and X-ray photons. For the first time, the response of the system to soft X-rays (250 eV to 1 keV) is presented. The main performance parameters of the first detector are measured, assessing the capabilities in terms of noise, dynamic range and single-photon discrimination capability. Present limitations and coming improvements are discussed.
    Sprache Englisch
    Erscheinungsdatum 2021-01-01
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 2021413-3
    ISSN 1600-5775 ; 0909-0495
    ISSN (online) 1600-5775
    ISSN 0909-0495
    DOI 10.1107/S1600577520013958
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel ; Online: Pump-probe experiments at the TEMPO beamline using the low-α operation mode of Synchrotron SOLEIL.

    Silly, Mathieu G / Ferté, Tom / Tordeux, Marie Agnes / Pierucci, Debora / Beaulieu, Nathan / Chauvet, Christian / Pressacco, Federico / Sirotti, Fausto / Popescu, Horia / Lopez-Flores, Victor / Tortarolo, Marina / Sacchi, Maurizio / Jaouen, Nicolas / Hollander, Philippe / Ricaud, Jean Paul / Bergeard, Nicolas / Boeglin, Christine / Tudu, Bharati / Delaunay, Renaud /
    Luning, Jan / Malinowski, Gregory / Hehn, Michel / Baumier, Cédric / Fortuna, Franck / Krizmancic, Damjan / Stebel, Luigi / Sergo, Rudi / Cautero, Giuseppe

    Journal of synchrotron radiation

    2017  Band 24, Heft Pt 4, Seite(n) 886–897

    Abstract: The SOLEIL synchrotron radiation source is regularly operated in special filling modes dedicated to pump-probe experiments. Among others, the low-α mode operation is characterized by shorter pulse duration and represents the natural bridge between 50 ps ... ...

    Abstract The SOLEIL synchrotron radiation source is regularly operated in special filling modes dedicated to pump-probe experiments. Among others, the low-α mode operation is characterized by shorter pulse duration and represents the natural bridge between 50 ps synchrotron pulses and femtosecond experiments. Here, the capabilities in low-α mode of the experimental set-ups developed at the TEMPO beamline to perform pump-probe experiments with soft X-rays based on photoelectron or photon detection are presented. A 282 kHz repetition-rate femtosecond laser is synchronized with the synchrotron radiation time structure to induce fast electronic and/or magnetic excitations. Detection is performed using a two-dimensional space resolution plus time resolution detector based on microchannel plates equipped with a delay line. Results of time-resolved photoelectron spectroscopy, circular dichroism and magnetic scattering experiments are reported, and their respective advantages and limitations in the framework of high-time-resolution pump-probe experiments compared and discussed.
    Sprache Englisch
    Erscheinungsdatum 2017-06-15
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 2021413-3
    ISSN 1600-5775 ; 0909-0495
    ISSN (online) 1600-5775
    ISSN 0909-0495
    DOI 10.1107/S1600577517007913
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel ; Online: Detector developments at DESY.

    Wunderer, Cornelia B / Allahgholi, Aschkan / Bayer, Matthias / Bianco, Laura / Correa, Jonathan / Delfs, Annette / Göttlicher, Peter / Hirsemann, Helmut / Jack, Stefanie / Klyuev, Alexander / Lange, Sabine / Marras, Alessandro / Niemann, Magdalena / Pithan, Florian / Reza, Salim / Sheviakov, Igor / Smoljanin, Sergej / Tennert, Maximilian / Trunk, Ulrich /
    Xia, Qingqing / Zhang, Jiaguo / Zimmer, Manfred / Das, Dipayan / Guerrini, Nicola / Marsh, Ben / Sedgwick, Iain / Turchetta, Renato / Cautero, Giuseppe / Giuressi, Dario / Menk, Ralf / Khromova, Anastasiya / Pinaroli, Giovanni / Stebel, Luigi / Marchal, Julien / Pedersen, Ulrik / Rees, Nick / Steadman, Paul / Sussmuth, Mark / Tartoni, Nicola / Yousef, Hazem / Hyun, HyoJung / Kim, KyungSook / Rah, Seungyu / Dinapoli, Roberto / Greiffenberg, Dominic / Mezza, Davide / Mozzanica, Aldo / Schmitt, Bernd / Shi, Xintian / Krueger, Hans / Klanner, Robert / Schwandt, Joem / Graafsma, Heinz

    Journal of synchrotron radiation

    2016  Band 23, Heft 1, Seite(n) 111–117

    Abstract: With the increased brilliance of state-of-the-art synchrotron radiation sources and the advent of free-electron lasers (FELs) enabling revolutionary science with EUV to X-ray photons comes an urgent need for suitable photon imaging detectors. ... ...

    Abstract With the increased brilliance of state-of-the-art synchrotron radiation sources and the advent of free-electron lasers (FELs) enabling revolutionary science with EUV to X-ray photons comes an urgent need for suitable photon imaging detectors. Requirements include high frame rates, very large dynamic range, single-photon sensitivity with low probability of false positives and (multi)-megapixels. At DESY, one ongoing development project - in collaboration with RAL/STFC, Elettra Sincrotrone Trieste, Diamond, and Pohang Accelerator Laboratory - is the CMOS-based soft X-ray imager PERCIVAL. PERCIVAL is a monolithic active-pixel sensor back-thinned to access its primary energy range of 250 eV to 1 keV with target efficiencies above 90%. According to preliminary specifications, the roughly 10 cm × 10 cm, 3.5k × 3.7k monolithic sensor will operate at frame rates up to 120 Hz (commensurate with most FELs) and use multiple gains within 27 µm pixels to measure 1 to ∼100000 (500 eV) simultaneously arriving photons. DESY is also leading the development of the AGIPD, a high-speed detector based on hybrid pixel technology intended for use at the European XFEL. This system is being developed in collaboration with PSI, University of Hamburg, and University of Bonn. The AGIPD allows single-pulse imaging at 4.5 MHz frame rate into a 352-frame buffer, with a dynamic range allowing single-photon detection and detection of more than 10000 photons at 12.4 keV in the same image. Modules of 65k pixels each are configured to make up (multi)megapixel cameras. This review describes the AGIPD and the PERCIVAL concepts and systems, including some recent results and a summary of their current status. It also gives a short overview over other FEL-relevant developments where the Photon Science Detector Group at DESY is involved.
    Sprache Englisch
    Erscheinungsdatum 2016-01
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 2021413-3
    ISSN 1600-5775 ; 0909-0495
    ISSN (online) 1600-5775
    ISSN 0909-0495
    DOI 10.1107/S1600577515022237
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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