Hollow cathode effect - Wikipedia
WEBThe hollow cathode effect allows electrical conduction at a lower voltage or with more current in a cold-cathode gas-discharge lamp when the cathode is a conductive tube open at one end than a similar lamp with a flat cathode. [1]
Hollow-cathode lamp - Wikipedia
WEBA hollow-cathode lamp (HCL) is type of cold cathode lamp used in physics and chemistry as a spectral line source (e.g. for atomic absorption spectrometers) and as a frequency tuner for light sources such as lasers.
Plasma hollow cathodes | Journal of Applied Physics - AIP Publishing
WEBAug 5, 2021 · Hollow cathodes used to generate plasma discharges are remarkable devices. They make copious amounts of plasma, highly ionized plasmas in some cases. They are easily started with a momentary heater, RF exciter, or Paschen discharge.
Hollow-Cathode Lamp - an overview | ScienceDirect Topics
WEBThe hollow-cathode lamp (Figure 3(d)) is the most common of the hollow-cathode configurations; it can be used as an ion or photon source. There is a cylindrical hollow-cathode design ( Figure 3(e) ) that allows for the sample to be introduced into the cavity and then atomized and excited/ionized.
Hollow-cathode lamp - Simple English Wikipedia, the free …
WEBA hollow-cathode lamp (HCL) is type of cold cathode lamp used in physics and chemistry as a spectral line source (for example, in atomic absorption spectrometers) and as a frequency tuner for light sources such as lasers.
Hollow Cathode Discharge - an overview | ScienceDirect Topics
WEBA Hollow Cathode Discharge refers to a design where the cathode surrounds the discharge volume, leading to the formation of ions in the discharge. It is used to create a stable operation over a range of currents and pressures in scientific experiments.
WEBNov 1, 2010 · This paper discusses the parameters which influence the operation of hollow cath-ode and deuterium lamps. Examples are given of how parameters can be selected in order to improve the quality of analytical results. Aspects of deuterium lamp operation for background correction are also covered.
WEBHollow cathode lamps are essentially two electrodes enclosed in a low-pressure fill-gas. The cathode is made from the mater- ial that is to be determined. The fill-gas is either neon or argon. There is a two-step process to have light emitted. Sputtering. Figure 1. A typical hollow cathode lamp. Figure 2.
Hollow Cathodes - an overview | ScienceDirect Topics
WEBHigh-intensity hollow cathode lamps (HI-HCLs) provide increased intensity by use of an additional electrode to separate the atomization and excitation processes. The irradiance of the HI-HCLs is a factor of 20–100 times greater than that of conventional HCLs, and provides better sensitivity for AFS.
Hollow Cathodes
WEBHollow Cathodes. Ion and Hall thrusters that utilize an electron discharge to ionize the propellant gas and create the plasma in the thruster require a cathode to emit the electrons. In addition, thrusters must neutralize the ion beam leaving the thruster by providing electrons emitted from a cathode into the beam.
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