Results 31 to 40 of about 289 (147)
Wiggler radiation at a low‐emittance storage ring and its usage for X‐ray absorption spectroscopy
Journal of Synchrotron Radiation, Volume 29, Issue 2, Page 462-469, March 2022., 2022 Experimental and computational studies of wigglers on low‐emittance storage rings are reported. EXAFS spectra for possible distortions originating from the source imperfection are also examined. It is concluded that wigglers are still an appropriate class of insertion devices, also on low‐emittance synchrotrons.A wiggler is a high‐power insertion ...
Konstantin Klementiev +2 more
wiley +1 more source
Dispersion‐compensated Rowland spectrometer: implications for uranium VB‐RIXS
Journal of Synchrotron Radiation, Volume 33, Issue 1, Page 218-226, January 2026.A valence‐band resonant inelastic X‐ray scattering instrument, operating in the tender X‐ray range, uses an incoming beam with a linear energy dispersion to reach the intrinsic resolution of the Rowland spectrometer. Such a scheme is insensitive to the incident bandwidth and therefore preserves count‐rates despite the higher resolution.The total energy
Martin Sundermann +4 more
wiley +1 more source
Indiscernibles in monadically NIP theories
Bulletin of the London Mathematical Society, Volume 57, Issue 11, Page 3326-3345, November 2025.Abstract We prove various results around indiscernibles in monadically NIP theories. First, we provide several characterizations of monadic NIP in terms of indiscernibles, mirroring previous characterizations in terms of the behavior of finite satisfiability. Second, we study (monadic) distality in hereditary classes and complete theories.
Samuel Braunfeld, Michael C. Laskowski
wiley +1 more source
Advanced Materials, Volume 37, Issue 27, July 10, 2025.The structural and photophysical properties of the 2D layered metal halides (4F‐PMA)2GeI4 and (4F‐PMA)2PbI4 are reported. For the Ge composition, reduced exciton‐phonon coupling is found and the absence of bound‐exciton emission, present for the Pb composition.
Zachary A. VanOrman +9 more
wiley +1 more source
Groups with boundedly Černikov conjugacy classes
Advances in Group Theory and Applications, 2021 Summary: A relevant theorem of B. H. Neumann states that if a group \(G\) has boundedly finite conjugacy classes, then its commutator subgroup \(G'\) is finite. This result has been generalized in [\textit{E. Detomi} et al., Glasg. Math. J. 63, No. 1, 54--58 (2021; Zbl 1530.20084)], where it is proved in particular that if the orbits of a group \(G ...
M. De Falco +3 more
openaire +4 more sources
Journal of Synchrotron Radiation, Volume 32, Issue 4, Page 1068-1084, July 2025.A dispersive X‐ray absorption spectroscopy instrument has been developed and implemented at the Advanced Photon Source's Advanced Spectroscopy Beamline. The instrument uses a convexly bent Bragg‐crystal analyzer to disperse a polychromatic X‐ray beam and independent Kirkpatrick–Baez mirrors for focusing, thereby providing a simple and flexible method ...
Juanjuan Huang +7 more
wiley +1 more source
Food Chemistry International, Volume 1, Issue 2, Page 167-182, June 2025.Product identification of flavonoids under weak base conditions and mechanism analysis of dimer formation by the oxidative assembly of quercetin and morin, respectively. ABSTRACT Flavonoids are susceptible to autoxidation in aqueous solutions, which is largely dependent on pH, generating various free radicals and oxidation products. Quercetin and morin
Pengren Zou +7 more
wiley +1 more source
Exciton Diffusion in Two‐dimentional Chiral Perovskites
Advanced Optical Materials, Volume 13, Issue 11, April 14, 2025.Transport of light‐emitting excitons is demonstrated in 2D chiral perovskites via transient optical microscopy. The excitons are found to diffuse rapidly after the excitation followed by localization at longer time‐scales. Temperature‐dependent exciton propagation combined with photothermal deflection spectroscopy measurements reveal the role of ...
Sophia Terres +12 more
wiley +1 more source
The Yenisei Makes the Weather: The Microclimate of the Krasnoyarsk Dam and Its Research, 1960s–1990s
The Russian Review, Volume 84, Issue 2, Page 249-266, April 2025.Abstract When Soviet authorities began building the Krasnoyarsk Dam in 1956, the Yenisei River had an ice‐free period of only 112 days a year. The thick and long‐lasting ice impeded dam building and navigation. However, as the dam rose, it produced an environmental anomaly; for more than 200 kilometers downstream, the Yenisei became ice‐free year‐round.
Mariia Koskina
wiley +1 more source
Magneto‐Spectroscopy of Interlayer Excitons in Transition‐Metal Dichalcogenide Heterostructures
physica status solidi (b), Volume 262, Issue 3, March 2025.Combining two different transition‐metal dichalcogenide monolayers can lead to a type‐II band alignment and formation of interlayer excitons (ILE). In diselenide heterobilayers, bright ILE are observable if the interlayer twist angle is close to 0° or 60°.
Johannes Holler +14 more
wiley +1 more source