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Efficiency improvement in relativistic Cerenkov devices due to dynamic cyclotron resonance
By: Vlasov, A.N.; Kornienko, V.N.; Cherepenin, V.A.;
1996 / IEEE
Description
This item was taken from the IEEE Periodical ' Efficiency improvement in relativistic Cerenkov devices due to dynamic cyclotron resonance ' The efficiency enhancement in relativistic electron devices with linear electron beams guided by homogeneous magnetic fields due to combined Cerenkov-cyclotron interaction has been studied. The case considered is when electrons do not satisfy the cyclotron resonance condition initially, but start interaction with an electromagnetic field under the condition of pure Cerenkov synchronism. Then, the changes in electron energy due to the Cerenkov interaction lead some electrons to satisfy the cyclotron resonance condition. This effect, called the dynamic cyclotron resonance, may play a significant role in strongly nonlinear regimes of a primary interaction when an electron beam is separated into groups of accelerated and decelerated particles. For the case of the primary Cerenkov interaction, two groups of accelerated and decelerated electrons can exist which interact with the RF field under the same Cerenkov resonance condition, but due to dynamic shifts in electron cyclotron frequencies, can resonantly interact with different harmonics or the gyrofrequency. It is shown by numerical simulations that the efficiency can be improved 25-28% for typical Cerenkov interaction up to 50% by choosing an appropriate value of the focusing magnetic field.
Related Topics
Microwave Tubes
Cyclotron Resonance
Cherenkov Radiation
Magnetic Fields
High-power Microwave Sources
Efficiency Enhancement
Relativistic Cherenkov Devices
Dynamic Cyclotron Resonance
Relativistic Electron Devices
Homogeneous Magnetic Fields
Combined Cerenkov-cyclotron Interaction
Electromagnetic Field
Numerical Simulation
Focusing Magnetic Field
Cyclotrons
Magnetic Resonance
Electron Beams
Magnetic Fields
Acceleration
Electron Devices
Electromagnetic Fields
Frequency Synchronization
Radio Frequency
Resonant Frequency
Relativistic Electron Beam Tubes
Harmonics
Engineered Materials, Dielectrics And Plasmas
Engineering
Linear Electron Beams