Abstract.  Laser plasma x-ray radiation characteristics have been investigated. The experiments have been carried out with powerful laser installation “Kanal-2”. Target has been irradiated by one beam of a neodymium glass laser with controllable function of mutual coherence. The power flux density of the heating radiation on a target was 10¹³-10¹⁴ W/cm².

The complex of x-ray diagnostics consists of several channels:
- x-ray diagnostic channel for continuous and line x-ray radiation spectra studing;
- pinhole camera for obtaining the plasma image in the own x-ray radiation (λ ≤ 9 Å) with the resolution on the object ~16 µm;
- Schwarzschild objective for obtaining the plasma image in the own x-ray radiation (180 – 200 Å) with the resolution on the object ~2.5 µm;
- channel for registration of the time evolution of plasma x-ray radiation;
- calorimetric system for plasma and laser energy characteristics measuring.
The spatial, temporal and energy characteristics of x-ray plasma radiation have been investigated. Metal foils and volume-structured materials with undercritical and upcritical density have been used as the targets.

Analysis of experimental results of laser radiation interaction with different materials and its qualitative description are reported.
The work is partly supported by the Russian Foundation for Basic Researches, grant # 10-02-00113.