Soft-x-ray radiation from plasmas produced by obliquely incident subpicosecond laser pulses

Soft-x-ray spectra (${10}^{17}$ W/${\mathrm{cm}}^2$ and different angles of incidence. It was found that the spectra depended strongly on these parameters. Comparison of the spectra produced by p- and s-polarized 248 nm radiation showed that not only collisional but also other absorption mechanisms were present. These additional processes affected only the total amount of the generated soft-x-ray radiation but not the spectral shape and not the electron temperature.