Stability properties of free-electron laser in Raman regime with thermal electron beam

Journal Article · Wed Apr 15 00:00:00 EDT 2009 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3106684· OSTI ID:21277026

Chakhmachi, A ^[1]; Maraghechi, B ^[2]

---

1. Plasma Physics and Nuclear Fusion Research School, Nuclear Science and Technology Research Institute, Atomic Energy Organization of Iran, P.O. Box 14155-1339, Tehran (Iran, Islamic Republic of)
2. Department of Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran (Iran, Islamic Republic of)

In the context of kinetic theory an expression for the growth rate of a free-electron laser, under the weak resonance instability condition, for full dispersion relation has been obtained. The space-charge potential is included in the analysis and the expression for growth rate reduces to that of the Compton regime under the low density condition. With the assumption of a spread in the longitudinal momentum in the form of a Gaussian distribution function, the effect of the thermal electron beam on the growth rate is studied. The results are compared to another linear theory, a computer simulation, and an experiment.

• OSTI ID: 21277026
• Journal Information: Physics of Plasmas, Vol. 16, Issue 4; Other Information: DOI: 10.1063/1.3106684; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAM-PLASMA SYSTEMS
COMPTON EFFECT
COMPUTERIZED SIMULATION
DISPERSION RELATIONS
ELECTRON BEAMS
FREE ELECTRON LASERS
GAUSS FUNCTION
LONGITUDINAL MOMENTUM
PLASMA DENSITY
PLASMA INSTABILITY
PLASMA SIMULATION
SPACE CHARGE