Results 91 to 100 of about 89,033 (293)

Ion-hose instability in a long-pulse linear induction accelerator

Physical Review Special Topics. Accelerators and Beams, 2003
The ion-hose instability is a transverse electrostatic instability which occurs on electron beams in the presence of a low-density ion channel. It is a phenomenon quite similar to the interaction between electron clouds and proton or positron beams in ...
Thomas C. Genoni, Thomas P. Hughes
doaj   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Suppressed Cosmic-Ray Energy Densities in Molecular Clouds from Streaming Instability-regulated Transport

The Astrophysical Journal
Cosmic rays (CRs) are the primary driver of ionization in star-forming molecular clouds (MCs). Despite their potential impacts on gas dynamics and chemistry, no simulations of star cluster formation following the creation of individual stars have ...
Margot Fitz Axen, Stella Offner, Philip F. Hopkins, Mark R. Krumholz, Michael Y. Grudić   +4 more
doaj   +1 more source

The Nature of the Driving Mechanism in the Pulsating Hybrid PG 1159 Star Abell 43

, 2005
We extend our previous pulsational stability analyses of PG 1159 stars by modeling the hybrid PG 1159 type star Abell 43. We show that the standard kappa-mechanism due to the ionization of C and O in the envelope of this H-rich PG 1159 star is perfectly ...
Ciardullo, Dreizler, G. Fontaine, Gautschy, Herwig, Miksa, Napiwotzki, P. Brassard, P.-O. Quirion, Quirion, Schuh, Silvotti, Stanghellini, Starrfield, Starrfield, Starrfield, Vauclair, Werner   +17 more
core   +1 more source

3D‐Printable, Honeycomb‐Inspired Tissue‐Like Bioelectrodes for Patient‐Specific Neural Interface

Advanced Materials, EarlyView.
3D printed MRI‐compatible tissue‐like neural electrodes tailored to individual gyral patterns. This honeycomb‐inspired printable gel electrode (HiPGE) employs a bioinspired architecture with soft hydrogels, engineered to match the softness of brain tissue.
Marzia Momin, Luyi Feng, Xiaoai Chen, Salahuddin Ahmed, Basma AlMahmood, Li‐Pang Huang, Jiashu Ren, Xinyi Wang, Hyunjin Lee, Samuel R. Cramer, Nanyin Zhang, Sulin Zhang, Tao Zhou   +12 more
wiley   +1 more source

The impact of fill patterns on the fast ion instability in the ILC damping ring

, 2012
The ions produced via collisional ionization of the residual gas molecules in vacuum pipe with the circulating electron beam have deleterious effect on the beam properties and may become a limiting factor for the machine's performance.
Xia, Guoxing
core  

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

A nonlinear plasma retroreflector for single pulse Compton backscattering

New Journal of Physics, 2015
Compton scattered x-rays can be generated using a configuration consisting of a single ultrashort laser pulse and a shaped gas target. Upon ionization the gas target serves as a plasma mirror that reflects the incident pulse providing a counter ...
J P Palastro, D Kaganovich, D Gordon, B Hafizi, M Helle, J Penano, A Ting   +6 more
doaj   +1 more source

Dissipative ion-acoustic solitons in ion-beam plasma obeying a κ-distribution

AIP Advances, 2020
The amplitude modulation of ion-acoustic waves is investigated in a plasma system consisting of ions and electrons obeying κ-distribution. Taking into account the dissipative mechanisms that consist of the ionization and applying a reductive perturbation
Kengne Emmanuel, Liu Wuming
doaj   +1 more source

The Possibility of Thermal Instability in Early-Type Stars Due to Alfven Waves

, 1998
It was shown by dos Santos et al. the importance of Alfv\'en waves to explain the winds of Wolf-Rayet stars. We investigate here the possible importance of Alfv\'en waves in the creation of inhomogeneities in the winds of early-type stars.
Barlow M. J., Brown J. C., D. R. Goncalves, dos Santos L. C., Friaca A. C. S., Goncalves D. R., Gouveia Dal Pino E. M., Hartmann L. W., Hillier D. J., Hollweg J. V., Jatenco-Pereira V., Jatenco-Pereira V., Lagage P. O., Leer E., Moffat A. F. J., Moffat A. F. J., Opher R., R. Opher, Robert C., V. Jatenco‐Pereira, van der Hucht K. A., Velli M.   +21 more
core   +2 more sources