J. Phys. Colloques
Volume 49, Numéro C1, Mars 1988IAU Colloquium N° 102 on UV and X-ray Spectroscopy of Astrophysical and Laboratory Plasmas
|Page(s)||C1-203 - C1-206|
J. Phys. Colloques 49 (1988) C1-203-C1-206
GENERATION OF XUV SPECTRA BY POWERFUL PICOSECOND LASERC.H. NAM1, W. TIGHE1, S. SUCKEWER1, U. FELDMAN2 et J. SEELY2
1 Princeton University, Plasma Physics Laboratory, Princeton, NJ 08544, U.S.A.
2 Naval Research Laboratory, Washington, DC 20375, U.S.A.
The development of laser action at wavelengths shorter than those of current X-ray lasers is being investigated along two fronts. In the first case, we are exploring the possibilities for laser action at 15.4 nm in Li-like AlXI and 12.9 nm in Li-like SiXII in a magnetically confined recombining plasma. Previous work on hydrogen-like carbon, CVI, led to lasing action at 18.2 nm. Recently, this has been applied to microscopy and first results from a soft X-ray laser microscope are presented. A new technique to generate shorter wavelength X-ray lasing involves the interaction of a high power laser with a preformed plasma. The Powerful Picosecond Laser (PP-Laser) System with an output power level of 20-30 GW and focussed power density of 1016 - 1017 W/cm2 has recently become operational. The spectra of highly ionized atoms in the XUV region were recorded on a high resolution grazing incidence spectrometer for the PP-Laser beam interacting with different solid targets.