27 citations · 73 across the 21 of their papers we have counts for
21 papers
Photoinduced enhancement of chemical shift sensitivity to local vibrations
Ana Martínez Gutiérrez, Oliver Alexander, Pablo Estévez Alonso +26
The advent of novel free-electron laser sources enabling time-resolved x-ray photoelectron spectroscopy (tr-XPS) provides a unique opportunity to monitor local chemical environment…
Roadmap on Attosecond Science
Rocio Borrego Varillas, Pierre Agostini, Fernando Ardana-Lamas +108
Twenty-five years have passed since the first experimental demonstration of attosecond pulses, marking the advent of our ability to resolve and control electron motion in real time…
Unraveling real-time chemical shifts in the ultrafast regime
Daniel E. Rivas, Lorenzo Paoloni, Rebecca Boll +21
Traditional x-ray photoelectron spectroscopy (XPS) relies upon a direct mapping between the photoelectron binding energies and the local chemical environment, which is well-charact…
Attosecond soft X-ray pulses generated by chirp-dispersed manipulation in an XFEL reveal nonlinear core-electron dynamics in neon
Lars Funke, Markus Ilchen, Svitozar Serkez +59
Free-electron lasers have demonstrated their capability of generating intense attosecond X-ray pulses, which are the key to studying electron dynamics at their natural time scale a…
X-ray Free-Electron Laser accelerator to study on Quantum Electro-Dynamics
Svitozar Serkez, Eugene Bulyak, Gianluca Geloni
X-ray free-electron lasers (XFELs) utilize high-density and high-energy electron bunches which are well-suited to produce Compton back-scattering radiation. Here we study study int…
Multiple-core-hole resonance spectroscopy with ultraintense X-ray pulses
Aljoscha Rörig, Sang-Kil Son, Tommaso Mazza +14
Understanding the interaction of intense, femtosecond X-ray pulses with heavy atoms is crucial for gaining insights into the structure and dynamics of matter. One key aspect of non…
Observation of harmonic lasing in the Angstrom regime at European XFEL
E. A. Schneidmiller, F. Brinker, W. Decking +19
Harmonic lasing provides an opportunity to extend the photon energy range of existing and planned X-ray FEL user facilities. Contrary to nonlinear harmonic generation, harmonic las…
ROSA: Reconstruction of Spectrogram Autocorrelation for Self-Amplified Spontaneous Emission Free-Electron Lasers
Svitozar Serkez, Oleg Gorobtsov, Bohdana Sobko +2
In recent years X-ray Free Electron Lasers (XFELs) proved to be unmatched sources of ultrashort pulses of spatially coherent quasimonochromatic X-ray radiation. Diagnostics of XFEL…
Effects of energy spread on Brightness and Coherence of undulator sources
Gianluca Geloni, Svitozar Serkez, Ruslan Khubbutdinov +2
The (spectral) brightness for partially transverse coherent sources as Synchrotron Radiation (SR) and Free-Electron Laser (FEL) sources can be defined as the maximum of the Wigner…
Opportunities for Two-color Experiments at the SASE3 undulator line of the European XFEL
Gianluca Geloni, Vitali Kocharyan, Tommaso Mazza +3
X-ray Free Electron Lasers (XFELs) have been proven to generate short and powerful radiation pulses allowing for a wide class of novel experiments. If an XFEL facility supports the…
Circular polarization opportunities at the SASE3 undulator line of the European XFEL
Svitozar Serkez, Gianluca Geloni, Vitali Kocharyan +1
XFELs provide X-ray pulses with unprecedented peak brightness and ultrashort duration. They are usually driven by planar undulators, meaning that the output radiation is linearly p…
Novel opportunities for sub-meV inelastic X-ray scattering at high-repetition rate self-seeded X-ray free-electron lasers
Oleg Chubar, Gianluca Geloni, Vitali Kocharyan +5
Inelastic X-ray scattering (IXS) is an important tool for studies of equilibrium dynamics in condensed matter. A new spectrometer recently proposed for ultra-high-resolution IXS (U…
Perspectives of Imaging of Single Protein Molecules with the Present Design of the European XFEL. - Part I - X-ray Source, Beamlime Optics and Instrument Simulations
Svitozar Serkez, Vitali Kocharyan, Evgeni Saldin +3
The Single Particles, Clusters and Biomolecules (SPB) instrument at the European XFEL is located behind the SASE1 undulator, and aims to support imaging and structure determination…
The Full Potential of the Baseline SASE Undulators of the European XFEL
Ilya Agapov, Gianluca Geloni, Guangyao Feng +4
The output SASE characteristics of the baseline European XFEL, recently used in the TDRs of scientific instruments and X-ray optics, have been previously optimized assuming uniform…
Nonlinear undulator tapering in conventional SASE regime at baseline electron beam parameters as a way to optimize the radiation characteristics of the European XFEL
Svitozar Serkez, Vitali Kocharyan, Evgeni Saldin +2
We demonstrate that the output radiation characteristics of the European XFEL sources at nominal operation point can be easily made significantly better than what is currently repo…
Proposal to generate 10 TW level femtosecond x-ray pulses from a baseline undulator in conventional SASE regime at the European XFEL
Svitozar Serkez, Vitali Kocharyan, Evgeni Saldin +2
Output characteristics of the European XFEL have been previously studied assuming an operation point at 5 kA peak current. In this paper we explore the possibility to go well beyon…
Purified SASE undulator configuration to enhance the performance of the soft x-ray beamline at the European XFEL
Svitozar Serkez, Vitali Kocharyan, Evgeni Saldin +2
The purified SASE (pSASE) undulator configuration recently proposed at SLAC promises an increase in the output spectral density of XFELs. In this article we study a straightforward…
Extension of SASE bandwidth up to 2% as a way to increase the efficiency of protein structure determination by x-ray nanocrystallography at the European XFEL
Svitozar Serkez, Vitali Kocharyan, Evgeni Saldin +3
Femtosecond x-ray nanocrystallography exploiting XFEL radiation is an emerging method for protein structure determination using crystals with sizes ranging from a few tens to a few…
Proposal for a scheme to generate 10 TW-level femtosecond x-ray pulses for imaging single protein molecules at the European XFEL
Svitozar Serkez, Vitali Kocharyan, Evgeni Saldin +3
Single biomolecular imaging using XFEL radiation is an emerging method for protein structure determination using the "diffraction before destruction" method at near atomic resoluti…
Grating monochromator for soft X-ray self-seeding the European XFEL
Svitozar Serkez, Gianluca Geloni, Vitali Kocharyan +1
Self-seeding is a promising approach to significantly narrow the SASE bandwidth of XFELs to produce nearly transform-limited pulses. The implementation of this method in the soft X…
Wake monochromator in asymmetric and symmetric Bragg and Laue geometry for self-seeding the European X-ray FEL
Gianluca Geloni, Vitali Kocharyan, Evgeni Saldin +2
We discuss the use of self-seeding schemes with wake monochromators to produce TW power, fully coherent pulses for applications at the dedicated bio-imaging bealine at the European…