Current and neutron scaling for megajoule plasma focus machines
In a 2007 paper Nukulin and Polukhin surmised from electrodynamical considerations that, for megajoule dense plasma focus devices, focus currents and neutron yield Yn saturate as the capacitor energy E0 is increased by increasing the capacitance C0. In contrast, our numerical experiments show no...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2008
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| Online Access: | http://eprints.intimal.edu.my/218/ http://eprints.intimal.edu.my/218/1/5.pdf |
| Summary: | In a 2007 paper Nukulin and Polukhin surmised from electrodynamical
considerations that, for megajoule dense plasma focus devices, focus currents
and neutron yield Yn saturate as the capacitor energy E0 is increased by
increasing the capacitance C0. In contrast, our numerical experiments show
no saturation; both pinch currents and Yn continue to rise with C0 although
at a slower rate than at lower energies. The difference in results is explained.
The Nukulin and Polukhin assumption that the tube inductance and length are
proportional to C0 is contrary to laboratory as well as numerical experiments.
Conditions to achieve Yn of 1013 in a deuterium plasma focus are found from our
numerical experiments, at a storage energy of 3MJ with a circuit peak current
of 7.6MA and focus pinch current of 2.5 MA. |
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