Tunable coherent femtosecond X-ray source driven by an intense femtosecond laser C.H. Nam, H.J. Shin, D.G. Lee, Y.H. Cha, K.H. Hong et J.-H. Kim J. Phys. IV France, 11 PR2 (2001) Pr2-345-Pr2-350 DOI: 10.1051/jp4:2001267