Power of microwave generation in an ultrarelativistic electron beam in the regime of virtual cathode formation in an externally applied magnetic field

2013 ◽  
Vol 77 (12) ◽  
pp. 1448-1451 ◽  
Author(s):  
S. A. Kurkin ◽  
A. A. Koronovskii ◽  
A. E. Hramov
Keyword(s):  
Magnetic Field ◽  
Electron Beam ◽  
Applied Magnetic Field ◽  
Virtual Cathode ◽  
Microwave Generation ◽  
Ultrarelativistic Electron

scholarly journals Low-Energy State Electron Beam in a Uniform Channel

Plasma ◽  
2019 ◽  
Vol 2 (2) ◽  
pp. 222-228 ◽  
Author(s):  
Mikhail Fuks ◽  
Dmitrii Andreev ◽  
Artem Kuskov ◽  
Edl Schamiloglu
Keyword(s):  
Magnetic Field ◽  
Electron Beam ◽  
Space Charge ◽  
Virtual Cathode ◽  
Energy State ◽  
Beam Current ◽  
Low Energy ◽  
Magnetic Mirror ◽  
Limiting Current ◽  
Uniform Channel

In our earlier work, we showed that a low-energy state of an electron beam exists in a nonuniform channel between two virtual cathodes in a magnetron with diffraction output, which consists of three uniform sections with increasing radius. A uniform axial magnetic field fills the interaction space. This led to magnetron operation with >90% efficiency when combined with a magnetic mirror field at the output end. In this present paper, we show that a low-energy state of an electron beam can be realized in a uniform channel in which an increasing magnetic field is used in order to create a magnetic mirror at the output end. We consider two cases, one where the injected beam current slightly exceeds the space-charge-limiting current and the other where the injected beam current greatly exceeds the space-charge-limiting current. On the time scale of relevance to planned experiments (∼30 ns), when the injected current slightly exceeds the space-charge-limiting current a stationary virtual cathode forms and when the injected current greatly exceeds the space-charge-limiting current the virtual cathode oscillates back and forth.

scholarly journals Microwave generation power in a nonrelativistic electron beam with virtual cathode in a retarding electric field

2006 ◽  
Vol 32 (5) ◽  
pp. 402-405 ◽  
Author(s):  
E. N. Egorov ◽  
Yu. A. Kalinin ◽  
A. A. Koronovskiĭ ◽  
A. E. Hramov ◽  
M. Yu. Morozov
Keyword(s):  
Electron Beam ◽  
Electric Field ◽  
Virtual Cathode ◽  
Microwave Generation ◽  
Nonrelativistic Electron ◽  
Generation Power
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