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

Experimental results on measurement of dd-reaction cross sections in the energy range 0.1-1.5 keV using the Z-pinch technique are presented. The experiment was performed at the high current generator of the High-Current Electronics Institute in Tomsk, Russia. The dd-fusion neutrons were registered by time-of-flight scintillator detectors and BF/sub 3/ detectors of thermal neutrons. The estimates were obtained at the 90% confidence level for the upper limits of the neutron-producing dd-reaction cross sections for average deuteron collision energies of 0.11, 0.34, 0.37 and 1.46 keV These results substantiate the feasibility of getting cross sections for the dd-reaction in the range 0.8-3 keV using similar techniques for a pulse current level of 2-3 MA.