NDLI: Double layer in a cylindrical hollow-cathode discharge

Content Provider	Springer Nature Link
Author	Abu Hashem, A. Abd Al Halim, M. A. Hassouba, M. A. Masoud, M. M.
Copyright Year	2010
Abstract	A dc cylindrical coaxial glow discharge with an inner grid anode has been studied. The region between the two electrodes is seen dark, while a brightly glowing region forms inside the grid anode up to the center. The current-voltage characteristic of a dc cylindrical glow discharge in nitrogen is similar to that of a normal glow discharge, while the normal glow discharge voltage decreases with increasing pressure. The minimum plasma potentials are observed in the hollow cathode region due to the accumulation of electrons at the back of the grid anode. At the center, some of the passed electrons are converged, so their potential is decreased. These electrons have a sufficient time to be redistributed to form one group with a Maxwellian electron energy distribution function. The electron temperature measured by electric probes varies from 1.6 to 3.6 eV, while the plasma density varies from 3.9 × 10$^{16}$ to 7 × 10$^{13}$ m$^{−3}$, depending on the discharge current and probe position. The plasma density increases as the electrons move radially from the grid toward the central region, while their temperature decreases.
Starting Page	271
Ending Page	278
Page Count	8
File Format	PDF
ISSN	1063780X
Journal	Plasma Physics Reports
Volume Number	36
Issue Number	3
e-ISSN	15626938
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2010-04-08
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Atomic, Molecular, Optical and Plasma Physics
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics

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