Space-Charge Limited Current for a Non-Planar Crossed-Field Diode

Adam M. Darr, Joshua Pan, Ranajoy Bhattacharya, Jim Browning, Allen L. Garner

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Crossed-field devices (CFDs) use orthogonal magnetic and electric fields to generate reliable, cycloidal flows of electrons 1. Individual CFDs may vary greatly in geometry and purpose, such as simple planar devices, slow wave structure radio-frequency amplifiers, and sheath regions in nuclear fusion; regardless of form or function, CFDs are characterized by certain regimes of behavior. For magnetic fields below the Hull cutoff, electrons travel curved paths from the cathode, ultimately striking the anode; this reduces the space-charge limited current (SCLC), or the maximum stable flow in the CFD, compared to a non-magnetic diode. Above the Hull cutoff, electrons no longer reach the anode; such a condition is referred to as magnetically insulated.

Original languageEnglish
Title of host publication2021 IEEE International Conference on Plasma Science, ICOPS 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665432276
DOIs
StatePublished - 12 Sep 2021
Event2021 IEEE International Conference on Plasma Science, ICOPS 2021 - Lake Tahoe, United States
Duration: 12 Sep 202116 Sep 2021

Publication series

NameIEEE International Conference on Plasma Science
Volume2021-September
ISSN (Print)0730-9244

Conference

Conference2021 IEEE International Conference on Plasma Science, ICOPS 2021
Country/TerritoryUnited States
CityLake Tahoe
Period12/09/2116/09/21

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