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Your search keyword '"Minghong Wang"' showing total 4 results
Start Over Author "Minghong Wang" Journal international journal of infrared and millimeter waves
4 results on '"Minghong Wang"'

2. [Untitled]

Author

Zheng Liang, Minghong Wang, and Ziqiang Yang

Subjects
Physics, Radiation, business.industry, Wiggler, Free-electron laser, Plasma, Condensed Matter Physics, Laser, law.invention, Planar, Optics, Physics::Plasma Physics, law, Excited state, Dispersion relation, Physics::Space Physics, Physics::Accelerator Physics, Classical electromagnetism, Electrical and Electronic Engineering, Atomic physics, business, Instrumentation
Abstract

Dispersion equation of planar-wiggler free-electron laser with background plasma is derived using linear fluid theory. The characteristic of this plasma FEL is analyzed in detail. It is shown that reasonable background plasma density tends to improve FEL growth rate. We also find there exits a critical plasma density for FEL operating. When the background plasma density is higher than critical density, the FEL can no longer be excited.

Published
2003

3. [Untitled]

Author

Zheng Liang and Minghong Wang

Subjects
Physics, Radiation, Computer simulation, business.industry, Amplifier, Wiggler, Bandwidth (signal processing), Condensed Matter Physics, Finite element method, Nonlinear system, Planar, Optics, Physics::Accelerator Physics, Classical electromagnetism, Electrical and Electronic Engineering, business, Instrumentation
Abstract

A set of nonlinear three-dimension equations for the FEM amplifier with elliptical waveguide and planar wiggler is derived. Based on these equations, a universal numerical simulation program is developed independently. The characterisitics of this FEM including the evolution of power, saturation efficiency and bandwidth are investigated. Electron momentum spread and wiggler taper are also considered.

Published
2002

4. [Untitled]

Author

Zheng Liang, Ziqiang Yang, and Minghong Wang

Subjects
Physics, Radiation, Wiggler, Amplifier, Bandwidth (signal processing), Mathematical analysis, Nonlinear theory, Electron, Condensed Matter Physics, Finite element method, Computer Science::Other, Nonlinear system, Classical electromagnetism, Electrical and Electronic Engineering, Instrumentation
Abstract

FEM amplifier with a novel elliptic-groove guide is proposed and three-dimensional nonlinear theory for the elliptic-groove guide FEM amplifier is developed. A set of coupled nonlinear differential equations is derived and the characteristics of this FEM amplifier are numerically analyzed in detail including the evolution of power, efficiency and bandwidth. The effects on saturation efficiency due to electron momentum spread and wiggler taper are also studied.

Published
2002

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