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Yajun Huang, Xiaoxian Wang, Guomin Cui, Pingyang Wang and Dongsheng Cai
The C12A7 hollow cathode is expected to usher in a new generation of hollow cathodes because of its low work function and chemical stability. In order to reduce the emission melting and degradation caused by the overheating of this new cathode, different...
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Ugur Kokal, Nazli Turan and Murat Celik
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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...
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Daniela Pedrini, Cosimo Ducci, Ugo Cesari, Tommaso Misuri and Mariano Andrenucci
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. Low-power HTs are the most effective choice to perform ...
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Valentina Marascu, Cristian Stancu, Veronica Satulu, Anca Bonciu, Christian Grisolia and Gheorghe Dinescu
Tungsten erosion and dust occurrence are phenomena of great interest for fusion technology. Herein, we report results concerning the material damage and dust formation in the presence of high temperature and large area or concentrated discharges in heliu...
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Hamza Dunya, Maziar Ashuri, Dana Alramahi, Zheng Yue, Kamil Kucuk, Carlo U. Segre and Braja K. Mandal
The emerging need for high-performance lithium?sulfur batteries has motivated many researchers to investigate different designs. However, the polysulfide shuttle effect, which is the result of dissolution of many intermediate polysulfides in electrolyte,...
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Ryan Roussel, Gerard Andonian, Claire Hansel, Gerard Lawler, Walter Lynn, Nathan Majernik, River Robles, Kunal Sanwalka, Eric Wisniewski and James Rosenzweig
An externally heated, hollow cathode arc source was recommissioned at UCLA for use in experiments to drive plasma wakefields with shaped beams at the Argonne Wakefield Accelerator. The hollow cathode arc source provides a robust plasma column with a dens...
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Sergey Grigoriev, Alexander Metel, Marina Volosova and Yury Melnik
A new hollow cathode sputtering system is used for beam-assisted deposition of thin films on dielectric substrates. A copper target placed at the hollow cathode bottom is uniformly sputtered by argon ions from the glow discharge plasma filling the cathod...
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Bing Hui, Xiuhua Fu, Des Gibson, David Child, Shigeng Song, Lewis Fleming, Guntis Rutins, Hin On Chu, Caspar Clark and Stuart Reid
A hollow cathode plasma source has been operated automatically, demonstrating independent control of plasma ion energy and ion current density for plasma ion-assisted electron beam-deposited titania (TiO2). The lanthanum hexaboride hollow cathode design ...
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Daniela Pedrini, Tommaso Misuri, Fabrizio Paganucci and Mariano Andrenucci
Hollow cathodes are electron sources used for the gas ionization and the beam neutralization in both ion and Hall effect thrusters (HETs). A reduction of power and propellant consumption from the cathode is particularly needed in small satellite applicat...
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Dan M. Goebel and Ronald M. Watkins
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