J. Phys. IV France 11 (2001) Pr2-51-Pr2-54
Spectral and imaging characterization of tabletop X-ray lasersJ. Dunn1, A.Ya. Faenov2, T.A. Pikuz2, A.L. Osterheld1, S.J. Moon1, K.B. Fournier1, J. Nilsen1, I.Yu. Skobelev2, A.I. Magunov2 and V.N. Shlyaptsev3
1 Lawrence Livermore National Laboratory, Livermore, CA 94550, U.S.A.
2 MISDC of VNIIFTRI, Mendeleevo, Moscow Region 141570, Russia
3 DAS, University of California Davis-Livermore, Livermore, CA 94550, U.S.A.
We have performed L-shell spectroscopy and one-dimensional (l-D) imaging of a line focus plasma from a laser-heated Fe polished slab using the tabletop COMET laser system at the Lawrence Livermore National Laboratory. These plasmas are used to generate a Ne-like Fe transient gain x-ray laser that is recorded simultaneously. A spherically-curved crystal spectrometer gives high resolution x-ray spectra of the n = 3 - 2 and n = 4 - 2 resonance lines with l-D spatial resolution along the line focus. Spectra are presented for different laser pulse conditions. In addition, a variety of x-ray imaging techniques are described. We discuss imaging results from a double-slit x-ray camera with a spherically-curved crystal spectrometer. We show a high resolution Fe [MATH] spectrum from the x-ray laser target that indicates the presence of hot electrons in the x-ray laser plasma.
© EDP Sciences 2001