scholarly journals Effects of transverse electron beam motion in a relativistic backward wave oscillator operating at low guiding magnetic field

AIP Advances ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 025321 ◽  
Author(s):  
Huida Wang ◽  
Renzhen Xiao ◽  
Changhua Chen ◽  
Ping Wu ◽  
Yanchao Shi
Keyword(s):  
Magnetic Field ◽  
Electron Beam ◽  
Backward Wave Oscillator ◽  
Wave Oscillator ◽  
Backward Wave ◽  
Beam Motion ◽  
Transverse Electron

Particle simulation of dual-band coaxial relativistic backward-wave oscillator with a single annular electron beam

2013 ◽  
Vol 25 (5) ◽  
pp. 1184-1188
Author(s):  
唐永福 Tang Yongfu ◽  
蒙林 Meng Lin ◽  
李海龙 Li Hailong ◽  
张斐娜 Zhang Feina
Keyword(s):  
Electron Beam ◽  
Particle Simulation ◽  
Dual Band ◽  
Backward Wave Oscillator ◽  
Annular Electron Beam ◽  
Wave Oscillator ◽  
Backward Wave

scholarly journals Design and efficient operation of a coaxial RBWO

2013 ◽  
Vol 31 (2) ◽  
pp. 321-331 ◽  
Author(s):  
Y. Teng ◽  
C.H. Chen ◽  
H. Shao ◽  
J. Sun ◽  
Z.M. Song ◽  
...  
Keyword(s):  
Electron Beam ◽  
Slow Wave ◽  
Wave Structure ◽  
Slow Wave Structure ◽  
Power Capacity ◽  
Efficient Operation ◽  
Backward Wave Oscillator ◽  
Wave Oscillator ◽  
Backward Wave ◽  
Output Efficiency

AbstractCoaxial relativistic backward wave oscillator with the rippled inner conductor not only increases the output efficiency but also results in the serious phenomenon of pulse shortening in experiments. Our research indicates that the two main mechanisms leading to the pulse shortening are the electron beam interruption and combining effects of the explosive field electron emission and the secondary electron multipactor on the surface of the slow-wave structure. In order to enhance its power capacity the electrodynamic structure is modified by detailed analysis of the field distribution in the coaxial slow-wave structure. The appropriate resonant reflector and the electron collector are developed for the application of the coaxial relativistic backward wave oscillator. A series of surface treatment is applied to enhance the power capacity of the coaxial RBWO. In the experiment, the microwave pulse duration is increased from less than 10 ns to 20 ns, and the output efficiency is enhanced from less than 20% to 34% employing the electron beam pulse of the full width at half maximum 28 ns. The peak power of 1.01 GW at the frequency of 7.4 GHz is achieved. It is found that the output efficiency of the coaxial RBWO is likely to be advanced if its power capacity can be boosted further.

Sign in / Sign up

Export Citation Format

Share Document