Skobeltsyn Institute of Nuclear Physics
Lomonosov Moscow State University

Coherent peculiarities of X-ray bremsstrahlung radiation in particular polarization bremsstrahlung radiation (PB) and coherent traditional bremsstrahlung radiation (BR) generated in fast multi-charge cluster interaction with a medium one are considered. Some new coherent PB and BR eects connected with the mutual screening in clusters contained positive and negative charged particles and transformations of X-ray spectra are indicated that may be used in nano-object diagnostic.