Results 21 to 30 of about 11,337 (309)
Fundamental Ion-Surface Interactions in Plasma Thrusters [PDF]
, 2007 Ion thrusters offer the potential to enable many future interplanetary robotic missions presently under consideration by NASA. To realize the benefits offered by these low thrust devices, the sputtering mechanisms that are responsible for the ...
Kolasinski, Robert David
core +1 more source
Emission characteristics of laser ablation-hollow cathode glow discharge spectral source
Open Chemistry, 2014 The emission characteristics of a scheme combining laser ablation as sample introduction source and hollow cathode discharge as excitation source are presented.
Karatodorov Stefan +2 more
doaj +1 more source
Triple Langmuir Probes Measurements of LaB6 Hollow Cathodes Plume
Frontiers in Physics, 2019 Lanthanum hexaboride hollow cathodes represent a viable option for high power Hall effect thruster applications, under development for the next generation of manned and robotic interplanetary missions.
Giulia Becatti +4 more
doaj +1 more source
SITAEL HC1 Low-Current Hollow Cathode
Aerospace, 2020 SITAEL is active in the field of electric propulsion and is involved in the development of different thruster technologies—mainly Hall thrusters (HTs)—of power levels ranging from 100 W up to 20 kW.
Daniela Pedrini +4 more
doaj +1 more source
Influence of the cathode material in the cathode fall characteristics of a hydrogen hollow cathode glow-discharge [PDF]
, 2018 Producción CientíficaIn this work, we present Doppler free two photon optogalvanic measurements to determine the local electric field strength (E-field) in the cathode fall region of a hollow cathode discharge, operated in pure hydrogen, via the Stark ...
C. Pérez +10 more
core +1 more source
Barium Depletion in Hollow Cathode Emitters [PDF]
45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2009 Dispenser hollow cathodes rely on a consumable supply of Ba released by BaO-CaO-Al2O3 source material in the pores of a tungsten matrix to maintain a low work function surface. The examination of cathode emitters from long duration tests shows deposits of tungsten at the downstream end that appear to block the flow of Ba from the interior. In addition,
James E. Polk +3 more
openaire +2 more sources
Aerospace, 2021 LaB6 emitters are commonly used in hollow cathodes that are utilized in electric space propulsion systems. In order to obtain necessary surface current emission densities of 1–10 A/cm2 for cathode operations, LaB6 emitters require temperatures above 1500
Ugur Kokal, Nazli Turan, Murat Celik
doaj +1 more source
International Journal of Electrochemical Science, 2018 The hollow nanostructured Li(Ni1/3Co1/3Mn1/3)O2 (NCM) microspheres with low Li/Ni disorder were fabricated by precursor-template approach and investigated electrochemically as lithium ion batteries (LIBs) cathode. The as-obtained NCM microspheres cathode
Zhenya Kang +3 more
doaj +1 more source
Results in Physics, 2019 Diamond-like carbon (DLC) films exhibit exceptional tribological characteristics, but their practical application requires the development of scalable methods for uniform film deposition.
Weiwei Sun +3 more
doaj +1 more source
Protective amorphous carbon coatings on glass substrates
AIP Advances, 2017 Thick amorphous carbon films were deposited by the Magnets-in-Motion (M-M) rf linear hollow cathode at varying acetylene contents in Ar in a hybrid PVD/PE-CVD process directly on glass substrates. The hollow cathode plates manufactured from graphite were
Kaspars Silins +2 more
doaj +1 more source