X-ray line spectropolarimetry as a new diagnostic of anisotropic plasma sources

摘要

The results of theoretical and experimental studies of anisotropic plasma sources are reported. They are based on x-ray line spectropolarimetry, a powerful new tool for investigating anisotropy of high-temperature plasmas. It is based on theoretical modeling of polarization-sensitive x-ray line spectra recorded simultaneously by two spectrometers with different sensitivities to polarization. The difference in these polarization-sensitive spectra is used to diagnose the parameters of anisotropic electron beams in plasmas. Theoretical predictions of polarization which cover a broad spectral range from K- to M-shell line radiation are presented. The results of Ti and Mo x-pinch polarization-sensitive experiments at UNR are overviewed. This diagnostic can be applied not only to x-pinches as demonstrated here but to laser-generated and other laboratory x-ray sources.