Diagnostics of deuterium gas-puff z-pinch experiments on the GIT-12 generator*

Z-pinch experiments with a deuterium gas-puff and an outer plasma shell generated by plasma guns were carried out on the GIT-12 generator at the IHCE in Tomsk. Using this novel configuration of the load, the neutron yields from the DD reaction were significantly increased from 2x10$^{\mathrm{11}}$ up to 3x10$^{\mathrm{12}}$ neutrons per shot at the current level of about 3 MA. In addition to recent experiments, the threshold activation detectors were used in order to get the information about the energy spectrum of the generated neutrons. The copper, indium, and lead samples were irradiated by the pulse of the neutrons generated during the experimental shot. The decay radiation of the products from the reactions $^{\mathrm{63}}$Cu(n,2n)$^{\mathrm{62}}$Cu, $^{\mathrm{115}}$In(n, $\gamma )^{\mathrm{116m}}$In and $^{\mathrm{206}}$Pb (n,3n)$^{\mathrm{204m}}$Pb was observed using gamma spectrometer. According to the used neutron ToF scintillation detectors, the energy of neutrons reaches up to 20~MeV.