Experimental X-ray Spectra from Ti, V, Mn, and Ni Foils Irradiated with the Z-Beamlet Laser
POSTER
Abstract
We present results from our first experimental campaign aimed at investigating various x-ray spectral lines for use in future x-ray Thomson scattering experiments. The Z-Beamlet laser was used to irradiate 4 different metal foils (Ti,V,Mn, and Ni) with 10$^{15}$ W/cm$^{2}$ and a total of 1 kJ at $\lambda $ = 527 nm. The x-rays from the laser-heated plume were observed simultaneously at 90\r{ } and 8\r{ } (w.r.t. the surface) with two time integrating, spatially resolving spectrometers that employed spherical quartz crystals and image plate detectors. The following spectral lines were recorded with E/$\delta $E $\sim $ 1000: Ti He-$\beta $, V He-$\beta $, Mn He-$\alpha $, and Ni He-$\alpha $. The relative intensities of the resonance and intercombination and satellite lines show a clear angular dependence due to opacity effects. These effects will likely be important for interrupting scattered x-ray signals. Results from a CRF foam x-ray scattering experiment will also be presented.
*Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. DoE National Nuclear Security Administration under contract DE-AC04-94AL85000.