To diagnose X-ray polarization of laser-produced plasma in a wavelength of 0.2 ~ 20 nm

a novel polarized spectroscopy is designed and manufactured based on spatial resolution in laser-produced plasma experiments. The experiment was carried out at the 20J laser facility of Research Center of Laser Fusion

China Academy of Engineering Physics (CAEP). In the experiment

PET crystals are used as dispersive elements in the two orthogonal directions. The imaging plates

the effective area of 30 mm×80 mm

are taken as detectors. And the long optical paths of the X-ray beam are about 980 mm and 310mm from the source to the detectors via the PET crystals

respectively. The X-ray spectrum emitted from the aluminum plasmas was recorded by the image plates. It is calculated that the polarization were respective about 0.1233 and 0.1481 of the two Al Ⅻ spectrum by correcting helium resonance and combination spectrum. The experimental results demonstrate that there is anisotropic phenomenon in laser-produced plasma. This is an effective technique to diagnose the polarid spectrum of high-temperature plasma.