Chlorine K-shell spectroscopy of directly driven cylindrical implosions

K-shell X-ray emission from a chlorinated marker layer is used to diagnose the density and temperature evolution of the inner surface of the ablator i n a series of directly driven cylindrical implosions. Because the shape of the emitting region is irregular, the line-of-best-fit (LIBEF) method of Ki lkenny et al. [Phys. Rev. A 1980;22:2746.] is applied for the inference of electron density and the results used to find constraints on the temperatur e of the marker layer. (C) 2000 Elsevier Science Ltd. All rights reserved.