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Ali Akbar Ashkarran

Ali Akbar Ashkarran

Academic rank: Assistant Professor
ORCID:
Education: PhD.
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Faculty:
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Phone: 01135302485

Research

Title
Self-consistent and complete Field Theory of Relativistic Travelling Wave Tube Amplifier with plasma Loaded Tape Helix
Type
JournalPaper
Keywords
Field Theory Relativistic Travelling Wave Tube Amplifier plasma Loaded Tape Helix
Year
2011
Journal CANADIAN JOURNAL OF PHYSICS
DOI
Researchers Shahrooz Saviz ، Farzin M.Aghamir ، Hassan Mehdian ، Mohammad Ghorannevis ، Ali Akbar Ashkarran

Abstract

The dispersion relation of electromagnetic waves propagation through a plasma loaded helix traveling wave tube (TWT) is derived. The analysis is based on the self consistent and complete field theory for a configuration in which a magnetized pencil type beam propagates through cold plasma in the tape helix enclosed with a loss-free wall. A linear analysis of the interaction is considered subject to the boundary conditions imposed on different regions of the configuration. The resultant dispersion relation that is obtained implicitly includes azimuthal variations and all spatial harmonics of the tape helix. When the plasma medium is absent the dispersion relation reduces to the findings of Ref.