Madey 1971 FEL: undulator-induced electron-beam micro-bunching at lambda_FEL = lambda_u (1 + K^2/2)/(2 gamma^2); SASE + self-seeded; LCLS 2009 first hard-X-ray FEL.
Madey 1971 FEL: undulator-induced electron-beam micro-bunching at lambda_FEL = lambda_u (1 + K^2/2)/(2 gamma^2); SASE + self-seeded; LCLS 2009 first hard-X-ray FEL.