Experimental investigation of dd reaction in range of ultralow energies using Z-pinch

Experimental results on measurement of dd-reaction cross sections in the en ergy range of 0.1-1.5 keV using the Z-pinch technique are presented. The ex periment was fulfilled at the high current generator of the High-Current El ectronics Institute, city of Tomsk, Russia. The dd-fusion neutrons were reg istered by time-of-flight scintillator detectors and BF3 detectors of therm al neutrons. The estimates were obtained at 90% of the confidence level for the upper limits of the neutron-producing dd-reaction cross sections for a verage deuteron collision energies of 0.11, 0.34, 0.37, and 1.46 keV. These results substantiate feasibility to get a cross section magnitude for dd-r eaction in the range of the collision energy of 0.8-3 keV using similar tec hnology at the pulse current level of 2-3 MA.