[PDF][PDF] X‐ray optics for the cavity‐based X‐ray free‐electron laser

P Liu, P Pradhan, X Shi, D Shu, K Kauchha… - Journal of …, 2024 - journals.iucr.org
A cavity-based X-ray free-electron laser (CBXFEL) is a possible future direction in the
development of fully coherent X-ray sources. CBXFELs consist of a low-emittance electron …

Ultrafast Heating-Induced Suppression of d-Band Dominance in the Electronic Excitation Spectrum of Cuprum

Z Moldabekov, TD Gawne, S Schwalbe, TR Preston… - ACS …, 2024 - ACS Publications
The combination of isochoric heating of solids by free-electron lasers (FELs) and in situ
diagnostics by X-ray Thomson scattering (XRTS) allows for measurements of material …

Resonant inelastic x-ray scattering in warm-dense Fe compounds beyond the SASE FEL resolution limit

A Forte, T Gawne, KK Alaa El-Din… - Communications …, 2024 - nature.com
Resonant inelastic x-ray scattering (RIXS) is a widely used spectroscopic technique,
providing access to the electronic structure and dynamics of atoms, molecules, and solids …

Excitation signatures of isochorically heated electrons in solids at finite wave number explored from first principles

ZA Moldabekov, TD Gawne, S Schwalbe… - Physical Review …, 2024 - APS
Ultrafast heating of solids with modern x-ray free electron lasers (XFELs) leads to a unique
set of conditions characterized by the simultaneous presence of heated electrons in a cold …

Terawatt-attosecond hard X-ray free-electron laser at high repetition rate

J Yan, W Qin, Y Chen, W Decking, P Dijkstal… - Nature …, 2024 - nature.com
Ångstrom and attosecond are the fundamental spatiotemporal scales for electron dynamics
in various materials. Although attosecond pulses with wavelengths comparable to the atomic …

The collapse of a sonoluminescent cavitation bubble imaged with X-ray free-electron laser pulses

HP Hoeppe, M Osterhoff, AA Maleki… - New Journal of …, 2024 - iopscience.iop.org
Single bubble sonoluminescence (SBSL) is the phenomenon of synchronous light emission
due to the violent collapse of a single spherical bubble in a liquid, driven by an ultrasonic …

Machine-learning-enhanced automatic spectral characterization of x-ray pulses from a free-electron laser

DE Ferreira de Lima, A Davtyan, J Laksman… - Communications …, 2024 - nature.com
A reliable characterization of x-ray pulses is critical to optimally exploit advanced photon
sources, such as free-electron lasers. In this paper, we present a method based on machine …

Confirming the theoretical foundation of steady-state microbunching

A Kruschinski, X Deng, J Feikes, A Hoehl… - Communications …, 2024 - nature.com
Abstract Steady-State Microbunching (SSMB) has been proposed as a concept to generate
coherent synchrotron radiation at an electron storage ring. SSMB promises to supply kilowatt …

Spectral Flux Enhancement of X Rays for Addressing Ultra Narrow Nuclear Transitions

E Kuznetsova, X Zhang, Y Shvyd'ko, MO Scully… - Physical Review Letters, 2024 - APS
Recently, the 1.4 feV ultranarrow nuclear transition at 12.4 keV energy in Sc 45 was
resonantly excited for the first time using radiation from the self-seeded EuXFEL laser [Y …

Thermoelastic effects in Bragg reflectors as a potential bottleneck for XFELs with megahertz repetition rate

I Bahns, P Rauer, J Rossbach, S Steinlechner… - Communications …, 2024 - nature.com
Bragg reflectors are essential for beam transport in X-ray free-electron laser (XFEL) facilities.
On interaction with Bragg reflectors, a part of the pulse energy will be absorbed, causing the …