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- W2057807682 abstract "Experiments with deuterium (D2) triple shell gas puffs were carried out on the GIT-12 generator at a 3 MA current level and microsecond implosion times. The outer, middle and inner nozzle diameters were 160 mm, 80 mm and 30 mm, respectively. The influence of the mass of deuterium shells on neutron emission times, neutron yields and neutron energy spectra was studied. The injected linear mass of deuterium varied between 50 and 255 µg cm−1. Gas puffs imploded onto the axis before the peak of generator current at 700–1100 ns. Most of the neutrons were emitted during the second neutron pulse after the development of instabilities. Despite higher currents, heavier gas puffs produced lower neutron yields. Optimal mass and a short time delay between the valve opening and the generator triggering were more important than the better coincidence of stagnation with peak current. The peak neutron yield from D(d, n)3He reactions reached 3 × 1011 at 2.8 MA current, 90 µg cm−1 injected linear mass and 37 mm anode–cathode gap. In the case of lower mass shots, a large number of 10 MeV neutrons were produced either by secondary DT reactions or by DD reactions of deuterons with energies above 7 MeV. The average neutron yield ratio Y>10 MeV/Y2.5 MeV reached (6 ± 3) × 10−4. Such a result can be explained by a power law distribution for deuterons as . The optimization of a D2 gas puff Z-pinch and similarities to a plasma focus and its drive parameter are described." @default.
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- W2057807682 date "2013-06-05" @default.
- W2057807682 modified "2023-09-26" @default.
- W2057807682 title "Characterization of neutron emission from mega-ampere deuterium gas puff Z-pinch at microsecond implosion times" @default.
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- W2057807682 doi "https://doi.org/10.1088/0741-3335/55/8/085012" @default.
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