Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Gregor Hartman"'
Autor:
Xiang Li, Ludger Inhester, Timur Osipov, Rebecca Boll, Ryan Coffee, James Cryan, Ave Gatton, Tais Gorkhover, Gregor Hartman, Markus Ilchen, André Knie, Ming-Fu Lin, Michael P. Minitti, Clemens Weninger, Thomas J. A. Wolf, Sang-Kil Son, Robin Santra, Daniel Rolles, Artem Rudenko, Peter Walter
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
Abstract Molecules can sequentially absorb multiple photons when irradiated by an intense X-ray pulse from a free-electron laser. If the time delay between two photoabsorption events can be determined, this enables pump-probe experiments with a singl
Externí odkaz:
https://doaj.org/article/18c7f31e73ec4f57a2cc149d32a0abb6
Autor:
Peter Feuer-Forson, Gregor Hartmann, Rolf Mitzner, Peter Baumgärtel, Christian Weniger, Marcus Agåker, David Meier, Phillipe Wernet, Jens Viefhaus
Publikováno v:
Journal of Synchrotron Radiation, Vol 31, Iss 4, Pp 698-705 (2024)
During beam time at a research facility, alignment and optimization of instrumentation, such as spectrometers, is a time-intensive task and often needs to be performed multiple times throughout the operation of an experiment. Despite the motorization
Externí odkaz:
https://doaj.org/article/aee73111f2244d0ea9ea350c040386fb
Autor:
Gregor Hartman, Markus Ilchen, James P. Cryan, Clemens Weninger, Ryan Coffee, Daniel Rolles, Sang-Kil Son, Robin Santra, Rebecca Boll, Ludger Inhester, Ave Gatton, André Knie, Artem Rudenko, Tais Gorkhover, Peter Walter, Ming-Fu Lin, Michael P. Minitti, Thomas J. A. Wolf, Xiang Li, Timur Osipov
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
Scientific reports 11(1), 505 (2021). doi:10.1038/s41598-020-79818-6
Scientific Reports
Scientific reports 11(1), 505 (2021). doi:10.1038/s41598-020-79818-6
Scientific Reports
Scientific reports 11(1), 505 (2021). doi:10.1038/s41598-020-79818-6
Molecules can sequentially absorb multiple photons when irradiated by an intense X-ray pulse from a free-electron laser. If the time delay between two photoabsorption events ca
Molecules can sequentially absorb multiple photons when irradiated by an intense X-ray pulse from a free-electron laser. If the time delay between two photoabsorption events ca
Autor:
Gregor Hartmann, Gesa Goetzke, Stefan Düsterer, Peter Feuer-Forson, Fabiano Lever, David Meier, Felix Möller, Luis Vera Ramirez, Markus Guehr, Kai Tiedtke, Jens Viefhaus, Markus Braune
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-10 (2022)
Abstract We present real-world data processing on measured electron time-of-flight data via neural networks. Specifically, the use of disentangled variational autoencoders on data from a diagnostic instrument for online wavelength monitoring at the f
Externí odkaz:
https://doaj.org/article/c7d072d567df43c4b8a4df8442031f09
Autor:
Kristina Dingel, Thorsten Otto, Lutz Marder, Lars Funke, Arne Held, Sara Savio, Andreas Hans, Gregor Hartmann, David Meier, Jens Viefhaus, Bernhard Sick, Arno Ehresmann, Markus Ilchen, Wolfram Helml
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-14 (2022)
Abstract X-ray free-electron lasers (XFELs) as the world’s brightest light sources provide ultrashort X-ray pulses with a duration typically in the order of femtoseconds. Recently, they have approached and entered the attosecond regime, which holds
Externí odkaz:
https://doaj.org/article/60e0a9515e1142d4ba991ac9ec81c339
Autor:
Alberto De Fanis, Markus Ilchen, Alexander Achner, Thomas M. Baumann, Rebecca Boll, Jens Buck, Cyril Danilevsky, Sergey Esenov, Benjamin Erk, Patrik Grychtol, Gregor Hartmann, Jia Liu, Tommaso Mazza, Jacobo Montaño, Valerija Music, Yevheniy Ovcharenko, Nils Rennhack, Daniel Rivas, Daniel Rolles, Philipp Schmidt, Hamed Sotoudi Namin, Frank Scholz, Jens Viefhaus, Peter Walter, Pawel Ziółkowski, Haiou Zhang, Michael Meyer
Publikováno v:
Journal of Synchrotron Radiation, Vol 29, Iss 3, Pp 755-764 (2022)
A set of electron time-of-flight spectrometers for high-resolution angle-resolved spectroscopy was developed for the Small Quantum Systems (SQS) instrument at the SASE3 soft X-ray branch of the European XFEL. The resolving power of this spectrometer
Externí odkaz:
https://doaj.org/article/5c497f45fc9a4cea8b03fdb00a2a08d0
Autor:
Markus Ilchen, Philipp Schmidt, Nikolay M. Novikovskiy, Gregor Hartmann, Patrick Rupprecht, Ryan N. Coffee, Arno Ehresmann, Andreas Galler, Nick Hartmann, Wolfram Helml, Zhirong Huang, Ludger Inhester, Alberto A. Lutman, James P. MacArthur, Timothy Maxwell, Michael Meyer, Valerija Music, Heinz-Dieter Nuhn, Timur Osipov, Dipanwita Ray, Thomas J. A. Wolf, Sadia Bari, Peter Walter, Zheng Li, Stefan Moeller, André Knie, Philipp V. Demekhin
Publikováno v:
Communications Chemistry, Vol 4, Iss 1, Pp 1-9 (2021)
Ultrashort circularly polarised light pulses from free-electron lasers offer a route for exploring chiral molecules and their dynamics, but remain challenging to harness. Here, X-ray pump-probe experiments enable a site-specific photoelectron circula
Externí odkaz:
https://doaj.org/article/7c0e42a2648348ada89c187695c4e669
Autor:
Andreas Hans, Florian Trinter, Philipp Schmidt, Sebastian Eckart, Sven Grundmann, Gregor Hartmann, Xaver Holzapfel, Carolin Honisch, Gregor Kastirke, Max Kircher, Niklas Melzer, Christian Ozga, Clemens Richter, Jonas Rist, Markus Schöffler, Daniel Trabert, Isabel Vela-Perez, Johannes H. Viehmann, Miriam Weller, Reinhard Dörner, Uwe Hergenhahn, Arno Ehresmann, André Knie, Kirill Gokhberg, Aryya Ghosh, Till Jahnke
Publikováno v:
Physical Review Research, Vol 5, Iss 1, p 013055 (2023)
The role of interatomic and intermolecular energy and charge-transfer processes in weakly bound matter is currently lively debated due to emerging destructive low-energy electrons and radicals. Here, we discuss two mechanisms of single-photon two-sit
Externí odkaz:
https://doaj.org/article/cb918bb688e94849a9d40edb6708dc34
Publikováno v:
Physical Review Accelerators and Beams, Vol 25, Iss 10, p 104604 (2022)
Superconducting photoelectron injectors are promising for generating highly brilliant pulsed electron beams with high repetition rates and low emittances. Experiments such as ultrafast electron diffraction, experiments at the Terahertz scale, and ene
Externí odkaz:
https://doaj.org/article/6a60edf7d65644b9adb63bfb3a899115
Autor:
Alexander Gaul, Daniel Emmrich, Timo Ueltzhöffer, Henning Huckfeldt, Hatice Doğanay, Johanna Hackl, Muhammad Imtiaz Khan, Daniel M. Gottlob, Gregor Hartmann, André Beyer, Dennis Holzinger, Slavomír Nemšák, Claus M. Schneider, Armin Gölzhäuser, Günter Reiss, Arno Ehresmann
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 9, Iss 1, Pp 2968-2979 (2018)
Background: The application of superparamagnetic particles as biomolecular transporters in microfluidic systems for lab-on-a-chip applications crucially depends on the ability to control their motion. One approach for magnetic-particle motion control
Externí odkaz:
https://doaj.org/article/2b7339c7438c4eefb402ccb52377f68f