Results 101 to 110 of about 2,094,383 (285)

Positron Beam Loading and Acceleration in the Blowout Regime of a Plasma Wakefield Accelerator

Research
Plasma wakefield acceleration in the nonlinear blowout regime has achieved marked milestones in electron beam acceleration, demonstrating high acceleration gradients and energy efficiency while preserving excellent beam quality.
Shiyu Zhou, Siqin Ding, Weiming An, Qianqian Su, Jianfei Hua, Fei Li, Warren B. Mori, Chan Joshi, Wei Lu   +8 more
doaj   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

Particle-in-cell simulations of electron acceleration by a simple capacitative antenna in collisionless plasma [PDF]

, 2004
We examine the electron acceleration by a localized electrostatic potential oscillating at high frequencies by means of particle‐in‐cell (PIC) simulations, in which we apply oscillating electric fields to two neighboring simulation cells.
Dieckmann, Mark E,, Shukla, P. K., Shukla, PK, Rowlands, G, Eliasson, B, Dieckmann, M. E., Rowlands, G. (George), Eliasson, Bengt   +7 more
core   +1 more source

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source

The baryon loading effect on relativistic astrophysical jet transport in the interstellar medium

New Journal of Physics, 2018
The composition of the astrophysical relativistic jets remains uncertain. By kinetic particle-in-cell simulations, we show that the baryon component in the jet, or the so-called baryon loading effect (BLE), heavily affects relativistic jets transport ...
W P Yao, B Qiao, Z Xu, H Zhang, Z H Zhao, H X Chang, C T Zhou, S P Zhu, X T He   +8 more
doaj   +1 more source

A Practical Noise2Noise Denoising Pipeline for High‐Throughput Raman Spectroscopy

Advanced Engineering Materials, EarlyView.
A lightweight and reproducible denoising pipeline for high‐throughput Raman spectroscopy is introduced, based on a 1D convolutional autoencoder trained with a Noise2Noise strategy. Using only repeated short‐exposure acquisitions, the method suppresses stochastic noise without reference spectra, enabling reliable spectral reconstruction while preserving
David Martin‐Calle, Cesar Alvarez‐Llamas, Vincent Motto‐Ros, Christophe Dujardin, Jérémie Margueritat, David Rodney   +5 more
wiley   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

Surfatron and stochastic acceleration of electrons in astrophysical plasmas [PDF]

, 2005
Electron acceleration by large amplitude electrostatic waves in astrophysical plasmas is studied using particle-in-cell (PIC) simulations. The waves are excited initially at the electron plasma frequency $\omega_{\rm pe}$ by a Buneman instability driven ...
K. G. McCLEMENTS, R. O. DENDY, Dendy, R. O., McClements, K. G., M. E. DIECKMANN, S. C. CHAPMAN, A. YNNERMAN, Dieckmann, M. E., Ynnerman, A., Chapman, Sandra C.   +9 more
core   +1 more source

Analysis of Solar Microwave Burst Spectrum, I. Nonuniform Magnetic

Journal of Astronomy and Space Sciences, 2018
Solar microwave bursts carry information about the magnetic field in the emitting region as well as about electrons accelerated during solar flares. While this sensitivity to the coronal magnetic field must be a unique advantage of solar microwave burst
Jeongwoo Lee
doaj   +1 more source

Laboratory measurements of the physics of auroral electron acceleration by Alfvén waves. [PDF]

Nat Commun, 2021
Schroeder JWR, Howes GG, Kletzing CA, Skiff F, Carter TA, Vincena S, Dorfman S.   +6 more
europepmc   +1 more source