Research of D-D Fusion Reactions at the CTU in Prague

This report deals with the study of the fusion plasma on the z-pinch and plasma focus devices filled with deuterium gas. Investigation was done on the PFZ -200 in Prague, PF- 1000 in Warsaw, S-300 in Moscow and GIT 12 in Tomsk in Russian Federation with comprehensive X ray, neutron and interferometry diagnostics. During investigations the energy spectra of neutrons and deuterons were calculated using Monte Carlo simulation and adapted time-of-flight analysis. The interferometry instalated on the PF-1000 enabled to describe the plasmoidal, toroidal and helical structures in the plasma column and their evolution. Neutrons are produced in correlation with formation and disintegration of plasmoids and constrictions. On the z-pinches S-300 and GIT-12 the gas-puff injection of deuterium was tested. The characteristics of neutrons from both PF and z-pinches were compared at currents of 1-2 MA and their similarity and differences were described. On the PF-1000 the modified electrode system with cathode disk was used and the results showed moderation of plasma transformation and the lower neutron yield at the higher energy density in the column. Experimental of thermonuclear neutrons was published. The results obtained can be used as enter parameters for simulations of the neutron production on the devices above 2 MA done in SNL in USA. (author)