High-Energy Density science at the Linac Coherent Light Source

S H Glenzer, L B Fletcher, J B Hastings
2016 Journal of Physics, Conference Series  
The Matter in Extreme Conditions end station at the Linac Coherent Light Source holds great promise for novel pump-probe experiments to make new discoveries in highenergy density science. In recent experiments we have demonstrated the first spectrallyresolved measurements of plasmons using a seeded 8-keV x-ray laser beam. Forward x-ray Thomson scattering spectra from isochorically heated solid aluminum show a well-resolved plasmon feature that is down-shifted in energy by 19 eV from the
more » ... 8 keV elastic scattering feature. In this spectral range, the simultaneously measured backscatter spectrum shows no spectral features indicating observation of collective plasmon oscillations on a scattering length comparable to the screening length. This technique is a prerequisite for Thomson scattering measurements in compressed matter where the plasmon shift is a sensitive function of the free electron density and where the plasmon intensity provides information on temperature.
doi:10.1088/1742-6596/688/1/012020 fatcat:pjrjmfcutvbknlxapfn5bfk3ni