Results 41 to 50 of about 14,910,135 (394)
, 2015 We present the theory of a new amplification regime in Travelling Wave Tubes (TWTs) composed of a slow-wave periodic structure that supports multiple electromagnetic modes that can all be synchronized with the electron beam.
Capolino, Filippo +2 more
core +1 more source
Design and verification of a wide range and high precision electron gun system
He jishu, 2022 BackgroundGrid-controlled electron guns mostly use mesh grid and extract pulsed beam current; there is little research on the wide-range direct current beam.PurposeThis study aims to design a wide-range high-accuracy direct current electron gun to meet ...
ZHANG Haowei +3 more
doaj +1 more source
Exploiting atomic layer deposition for fabricating sub-10 nm X-ray lenses
, 2018 Moving towards significantly smaller nanostructures, direct structuring techniques such as electron beam lithography approach fundamental limitations in feature size and aspect ratios.
Belkhou, Rachid +14 more
core +1 more source
Application of Lightweight Structure in Automobile Bumper Beam: A Review
Materials, 2023 The bumper beam is an important device to ensure the safety of the car, which can effectively alleviate the force and absorb energy when the car collides.
Bing Du +5 more
semanticscholar +1 more source
Depth resolved grazing incidence scattering from the solid-liquid interface
, 2013 We have applied small angle scattering in grazing incidence beam geometry on a time-of-flight neutron instrument. Due to the broad wavelength distribution provided for a specific incident beam angle the penetration depth of the neutron beam is varied ...
A. J. C. Dennison +6 more
core +1 more source
A new-concept gamma calorimeter at ELI-NP [PDF]
, 2017 ELI-NP is an European Research Infrastructure that will provide a monochromatic,high brilliance gamma beam with tunable energy up to 19.5 MeV. The time structure of the beamconsists of 32 high intensity gamma bunches separated by a time interval of 16 ns
Albergo, Andreotti +12 more
core +1 more source
Structured beams invariant to coherent diffusion
Optics Express, 2020 Bessel beams are renowned members of a wide family of non-diffracting (propagation-invariant) fields. We report on experiments showing that non-diffracting fields are also immune to diffusion. We map the phase and magnitude of structured laser fields onto the spatial coherence between two internal states of warm atoms undergoing diffusion.
Slava Smartsev +4 more
openaire +3 more sources
Viscous damage model for timoshenko beam structures [PDF]
International Journal of Solids and Structures, 1997 A local damage constitutive model based on Kachanov’s theory is used within a finite element frame and applied to the case of 2D and 3D Timoshenko beam elements. The model takes into account viscous effects, thus allowing damping to be considered in a rigorous way.
Barbat, A. H. +3 more
openaire +4 more sources
Electron-beam patterned calibration structures for structured illumination microscopy
Scientific Reports, 2022 AbstractSuper-resolution fluorescence microscopy can be achieved by image reconstruction after spatially patterned illumination or sequential photo-switching and read-out. Reconstruction algorithms and microscope performance are typically tested using simulated image data, due to a lack of strategies to pattern complex fluorescent patterns with ...
Hari, S. (author) +8 more
openaire +6 more sources
Pediatric Blood &Cancer, EarlyView.ABSTRACT Ongoing evidence indicates increased risk of sarcopenic obesity among children and young people (CYP) with acute lymphoblastic leukemia (ALL), often beginning early in treatment, persisting into survivorship. This review evaluates current literature on body composition in CYP with ALL during and after treatment.
Lina A. Zahed +5 more
wiley +1 more source