Ferroelectric Cathodes in Transverse Magnetic Fields

Dunaevsky, Alexander ; Raitses, Yevgeny ; Fisch, Nathaniel J.

Princeton University. Plasma Physics Laboratory.

关键词: Surface Physics;    Magnetic Field Effects;    Cathodes;    Magnetic Fields;    70 Plasma Physics And Fusion Technology;   

DOI  :  10.2172/808378
RP-ID  :  PPPL-3731
RP-ID  :  AC02-76CH03073
RP-ID  :  808378

美国|英语

来源: UNT Digital Library

【 摘 要 】

Experimental investigations of a planar ferroelectric cathode in a transverse magnetic field up to 3 kGs are presented. It is shown that the transverse magnetic field affects differently the operation of ferroelectric plasma cathodes in ''bright'' and ''dark'' modes in vacuum. In the ''bright'' mode, when the surface plasma is formed, the application of the transverse magnetic field leads to an increase of the surface plasma density. In the ''dark'' mode, the magnetic field inhibits the development of electron avalanches along the surface, as it does similarly in other kinds of surface discharges in the pre-breakdown mode.