FEL2012 - List of Authors (Tsunawaki, Y.)

Paper	Title	Page
MOPD28	Theoretical Study of Smith-Purcell Free-Electron Lasers	85
	D. Li, K. Imasaki ILT, Suita, Osaka, Japan M.R. Asakawa, Y. Tsunawaki Kansai University, Osaka, Japan M. Hangyo ILE Osaka, Suita, Japan S. Miyamoto LASTI, Hyogo, Japan Y. Wei, Z. Yang UESTC, Chengdu, Sichuan, People's Republic of China
	We report here a theory to calculate the growth rate and start current of a Smith-Purcell free-electron lase. The mechanism of the interaction between a sheet electron beam and the surface wave above a lamellar grating is well investigated. After deriving the growth rate from the dispersion equation, the start current is dexterously worked out by considering the energy flow above the grating. The predictions of our theory agree with the results from the particle-in-cell simulations.

Paper

Title

Page

Theoretical Study of Smith-Purcell Free-Electron Lasers

85

D. Li, K. Imasaki
ILT, Suita, Osaka, Japan
M.R. Asakawa, Y. Tsunawaki
Kansai University, Osaka, Japan
M. Hangyo
ILE Osaka, Suita, Japan
S. Miyamoto
LASTI, Hyogo, Japan
Y. Wei, Z. Yang
UESTC, Chengdu, Sichuan, People's Republic of China

We report here a theory to calculate the growth rate and start current of a Smith-Purcell free-electron lase. The mechanism of the interaction between a sheet electron beam and the surface wave above a lamellar grating is well investigated. After deriving the growth rate from the dispersion equation, the start current is dexterously worked out by considering the energy flow above the grating. The predictions of our theory agree with the results from the particle-in-cell simulations.