Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/physreva.45.5556 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Differential phase contrast from electrons that cause inner shell ionization.
Ultramicroscopy
December 2024
School of Physics and Astronomy, Monash University, Clayton, Victoria, 3800, Australia. Electronic address:
Differential Phase Contrast (DPC) imaging, in which deviations in the bright field beam are in proportion to the electric field, has been extensively studied in the context of pure elastic scattering. Here we discuss differential phase contrast formed from core-loss scattered electrons, i.e.
View Article and Find Full Text PDFAngular Dispersion of Free-Electron-Light Coupling in an Optical Fiber-Integrated Metagrating.
ACS Photonics
March 2024
Center for Nanophotonics, NWO-Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands.
Free electrons can couple to optical material excitations on nanometer-length and attosecond-time scales, opening-up unique opportunities for both the generation of radiation and the manipulation of the electron wave function. Here, we exploit the Smith-Purcell effect to experimentally study the coherent coupling of free electrons and light in a circular metallo-dielectric metagrating that is fabricated onto the input facet of a multimode optical fiber. Using hyperspectral angle-resolved (HSAR) far-field imaging inside a scanning electron microscope, we probe the angular dispersion of Smith-Purcell radiation (SPR) that is simultaneously generated in free space and inside the fiber by an electron beam that grazes the metagrating at a nanoscale distance.
View Article and Find Full Text PDFInhibited Inelastic Scattering of Incoherent Excitons for Near-Band Edge Excitations.
Phys Rev Lett
March 2024
Institute of Experimental Physics I and Center for Materials Research (LaMa), Justus-Liebig-University Giessen, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany.
A multiple pump-terahertz probe experiment enables the clear distinction between elastic and inelastic scattering of excitons with a free electron-hole plasma in (Ga,In)As multiquantum wells. Low plasma energies dictate the prevalence of elastic scattering by inhibiting inelastic processes due to the absence of final states for quasiparticles. Yet, an increased plasma energy results in a progressive destruction of excitons.
View Article and Find Full Text PDFIn this paper, we investigate the optical nondegenerate solitons in a birefringent fiber with a 35 degree elliptical angle. We derive the nondegenerate bright one- and two-soliton solutions by solving the coupled Schrödinger equation. The formation of nondegenerate solitons is related to the wave numbers of the solitons, and we further demonstrate that it is caused by the incoherent addition of different components.
View Article and Find Full Text PDFMolecular specificity in neutron imaging: the case of hydrogen adsorption in metal organic frameworks.
Phys Chem Chem Phys
November 2023
Department of Physics and NAST Centre, Università degli Studi di Roma Tor Vergata, 00133, Roma, Italy.
Article Synopsis
- - Neutron imaging is a powerful technique used in various applications that require strong penetration capabilities, especially for detecting specific elements and analyzing crystal structures.
- - Two notable methods are white-beam neutron imaging, which focuses on elements with high neutron attenuation, and energy-resolved Bragg edge imaging for studying crystal lattices.
- - The text emphasizes the potential of energy-selective neutron imaging to provide detailed molecular-specific information, highlighted by a practical example investigating molecular-hydrogen behavior in the HKUST-1 metal-organic framework.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!