Solid targets 6 Amplification 4 Capillary flow 4 Near fields 4 Neon 4 Soft x-ray lasers 4 Wavelength lasers 4 X ray lasers 4 Ab-initio calculations 2 Amplifier length 2 Ar lasers 2 Ar-laser 2 Atomic numbers 2 Atoms 2 Binding energy 2 Binding sites 2 Calcium 2 Capillary discharge pumping 2 Capillary discharges 2 Carbon nanotubes 2 Cross sections 2 Dielectric functions 2 Dielectric response 2 Dirac equations 2 Electric discharges 2 Electron energy loss spectroscopy 2 Energy dissipation 2 Energy loss 2 Energy regions 2 Experimental datum 2