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1993
Pioneering observations on the luminescent phenomena generated in evacuated tubes belong to the history of spectroscopy and date as far back as the mid-1800s.(1,2) Within this field of research, the first description of a hollow cathode discharge (HCD) published in the scientific literature can be found in the early years of this century, when a German
Sergio Caroli, Oreste Senofonte
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Pioneering observations on the luminescent phenomena generated in evacuated tubes belong to the history of spectroscopy and date as far back as the mid-1800s.(1,2) Within this field of research, the first description of a hollow cathode discharge (HCD) published in the scientific literature can be found in the early years of this century, when a German
Sergio Caroli, Oreste Senofonte
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Compact lanthanum hexaboride hollow cathode
Review of Scientific Instruments, 2010A compact lanthanum hexaboride hollow cathode has been developed for space applications where size and mass are important and research and industrial applications where access for implementation might be limited. The cathode design features a refractory metal cathode tube that is easily manufactured, mechanically captured orifice and end plates to ...
Dan M, Goebel, Ronald M, Watkins
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Cathode Sputtering in Hollow Cathode Discharges
Journal of the Physical Society of Japan, 1962In order to investigate the processes responsible for a negative resistance of the hollow cathode discharge, several discharge parameters are measured with a Langmuir probe. The vapor density distributions of the sputtered cathode metal are measured by the absorption method of the resonance radiation of the metal atom. Almost all the metal atoms in the
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Observations of hollow cathode light emission from a transient hollow cathode discharge
Applied Physics Letters, 1991Experimental observations are presented on the light emission from the hollow cathode region of a pulsed hollow cathode discharge. A 2 mJ, 30 ns, 1.06 μm laser pulse incident on the back of the cathode is used to trigger the discharge. The temporal evolution of the light emission from this region is recorded in 50 nm spectral bands.
WYNDHAM, E +3 more
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Centrospazio Progress on MPDT Hollow Cathodes
40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 2004The paper deals with Alta-Centrospazio progress in the frame of the numerical activity on high-current hollow cathodes for MPD thrusters applications, started about three years ago with the development of a stationary, one-dimension single-channel hollow cathode model.
ROSSETTI P. +3 more
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SYNTHESIS OF FULLERENES BY HOLLOW CATHODE ARC
Fullerenes, Nanotubes and Carbon Nanostructures, 2002The formation of fullerenes in a hollow cathode arc in an inert gas atmosphere is investigated. The effects of the carbon evaporation rate, the inert gas flow rate and the arc temperature on the fullerene yield, production rate and conversion rate are observed.
Marković, Zoran M. +2 more
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Pre-Breakdown Processes in the Hollow Cathode Region of a Transient Hollow Cathode Discharge
Astrophysics and Space Science, 1997Discharge formation in the A–K space of transient hollow cathode discharge (THCD) is causally linked with the emission of high energy electron beams originating in the hollow cathode region (HCR). Ionization in the A–K gap proceeds through the formation of a moving virtual anode, whose time evolution is strongly correlated with different periods in the
M. Favre +6 more
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Transactions of the IRE Professional Group on Electron Devices, 1953
The properties of a cathode consisting of an internally coated hollow shell with an aperture have been measured for a variety of geometries. Electrons are emitted from the edge of the aperture at current densities as high as 30 amp/sq cm. The cathode is particularly adapted to producing hollow or odd-shaped electron beams.
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The properties of a cathode consisting of an internally coated hollow shell with an aperture have been measured for a variety of geometries. Electrons are emitted from the edge of the aperture at current densities as high as 30 amp/sq cm. The cathode is particularly adapted to producing hollow or odd-shaped electron beams.
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Pulsed Hollow Cathode Discharge Characteristics
2007 IEEE Pulsed Power Plasma Science Conference, 2007Hollow electrode structures are used in many applications to produce high intensity glow discharges. They provide high current densities at lower voltages compared to planar geometries. In this study, pulsed hollow cathode effects are investigated. Setup consists of hollow copper electrodes with 1.6 cm diameter cavity and a pulsed trigger unit attached
Esin B. Sozer +2 more
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1974
Publisher Summary This chapter provides an overview of hollow cathode arcs (HCA). Hollow cathodes have been used for some years in different discharge devices, working under varying conditions in widely extended ranges. All of these devices have one common feature: the cathode presents a hollow cavity, enclosed or at least partially bound by walls ...
Jean-Loup Delcroix +1 more
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Publisher Summary This chapter provides an overview of hollow cathode arcs (HCA). Hollow cathodes have been used for some years in different discharge devices, working under varying conditions in widely extended ranges. All of these devices have one common feature: the cathode presents a hollow cavity, enclosed or at least partially bound by walls ...
Jean-Loup Delcroix +1 more
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