Results 111 to 120 of about 33,174 (298)

A THERMIONIC ELECTRON GUN SYSTEM FOR THE JAERI SUPERCONDUCTING FEL

open access: yes, 2020
A highly stable and bright electron beam source was developed at the JAERI Free Electron Laser (FEL) facility. Though the electron beam source is a traditional thermionic electron gun, improvement of the gun greatly contributed to recent high brightness ...
N Nishimori   +4 more
core  

Mechanical design of a rf electron gun [PDF]

open access: yes, 1988
Brookhaven National Laboratory is building an Accelerator Test Facility at which we plan to study laser acceleration of electrons inverse free electron lasers and the production of X-rays by non- linear Compton scattering.
Batchelor, K., Sheehan, J., Woodle, M.H.
core  

Thermally Modulated Metasurface Sensor for Dynamic and Time‐Resolved Isolation of Extracellular Vesicles

open access: yesAdvanced Materials, EarlyView.
A thermally adaptive plasmonic metasurface, functionalized with poly(N‐isopropylacrylamide) (PNIPAM) and anti‐CD63 antibodies, enables precise, on‐demand capture and release of extracellular vesicles (EVs). Delivering high recovery, improved purity, and intact vesicle structure, the platform offers a versatile, label‐free solution for real‐time EV ...
Beyza Nur Kucuk   +7 more
wiley   +1 more source

Dark current studies on a normal-conducting high-brightness very-high-frequency electron gun operating in continuous wave mode

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2015
We report on measurements and analysis of a field-emitted electron current in the very-high-frequency (VHF) gun, a room temperature rf gun operating at high field and continuous wave (CW) mode at the Lawrence Berkeley National Laboratory (LBNL).
R. Huang   +5 more
doaj   +1 more source

Thermodynamic Limits to Molecular Doping in Conjugated Polymers: A Perspective on Phase Behavior and Miscibility

open access: yesAdvanced Materials, EarlyView.
Molecular doping of conjugated polymers is fundamentally constrained by thermodynamic phase behavior. This Perspective reframes doping efficiency and stability in terms of miscibility limits, binodals, and solvus boundaries, highlighting the role of effective interaction parameters and charge transfer.
Somayeh Kashani   +10 more
wiley   +1 more source

Elephant‐Skin‐Inspired Porous Cementitious Tiles with Programmable Crack Networks for Passive Cooling

open access: yesAdvanced Materials, EarlyView.
Elephant‐skin‐inspired crack networks are programmed in porous diatomaceous earth (DE)‐cement composites using substrate‐guided, stress‐concentration induced fracture. The resulting crack lattices act as capillary conduits that redistribute water, while the porous matrix stores moisture.
Qingya Huang   +5 more
wiley   +1 more source

A THz-Driven Electron Gun [PDF]

open access: yes, 2020
This thesis presents the development of a THz-driven electron gun and associated beam characterization assembly. The THz gun is a 2 cell electroformed copper structure and uses a copper tip field emission cathode.
Lewis, Samantha Michelle
core  

AI–Guided 4D Printing of Carnivorous Plants–Inspired Microneedles for Accelerated Wound Healing

open access: yesAdvanced Materials, EarlyView.
This work presents an artificial intelligence (AI)‐guided 4D‐printed microneedle platform inspired by carnivorous plants for wound healing. A thermo‐responsive shape memory polymer enables body temperature–triggered self‐coiling for autonomous wound closure.
Hyun Lee   +21 more
wiley   +1 more source

High Average Current Electron Beam Generation Using RF Gated Thermionic Electron Gun

open access: yesParticles
High-current electron beams can significantly enhance the productivity of variety of applications including medical radioisotope (RI) production and wastewater purification. High-power superconducting radio frequency (SRF) linacs are capable of producing
Anjali Bhagwan Kavar   +13 more
doaj   +1 more source

Beam performance of the photocathode gun for the MAX IV LINAC

open access: yes, 2014
The MAX IV facility in Lund (Sweden) is under construction and conditioning of the electron guns for the injector is ongoing. There are two guns in the injector, one thermionic gun for storage ring injection and one photocathode gun for the Short Pulse ...
Andersson, J.,   +5 more
core  

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