Results 251 to 260 of about 261,100 (291)
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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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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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Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 1999
A new type of plasma sputtering device, named the hollow cathode magnetron (HCM), has been developed by surrounding a planar magnetron cathode with a hollow cathode structure. Operating characteristics of HCMs, current–voltage (I–V) curves for fixed discharge pressure and voltage–pressure (V–p) curves for fixed cathode current, are measured.
Zhehui Wang, Samuel A. Cohen
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A new type of plasma sputtering device, named the hollow cathode magnetron (HCM), has been developed by surrounding a planar magnetron cathode with a hollow cathode structure. Operating characteristics of HCMs, current–voltage (I–V) curves for fixed discharge pressure and voltage–pressure (V–p) curves for fixed cathode current, are measured.
Zhehui Wang, Samuel A. Cohen
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Collisionless instability of the cathode sheath in a hollow-cathode discharge
Physical Review Letters, 1993High-intensity periodic variations of the potential fall across the cathode sheath are observed in a low-pressure magnetic-field-free hollow-cathode discharge. These potential variations cause modulation of the discharge current, reaching a depth of almost 100%.
, Arbel +4 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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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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A Study of Hollow Cathode Discharge Characteristics
AIAA Journal, 1970The operation and performance of small-orifice hollow cathodes for use in electron bombardment ion thrusters is described. Using mercury propellant, vaporized either in a small boiler or by a heated porous plug, cathodes have been operated in both a simple test facility and in an ion thruster.
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Spectrochimica Acta Part B: Atomic Spectroscopy, 1985
R.Kenneth Marcus, W.W. Harrison
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R.Kenneth Marcus, W.W. Harrison
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Vacuum Plasmatrons with Hollow Cathode: Gas-Dynamic Plasma Processes in the Hollow Cathode
Journal of Engineering Thermophysics, 2023P. V. Domarov +3 more
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SERT II - Durability of the hollow cathode and future applications of hollow cathodes
7th Electric Propulsion Conference, 1969openaire +1 more source