Effect of spin-polarized D-3He fuel on dense plasma focus for space propulsion

Details Effect of spin-polarized D-3He fuel on dense plasma focus for space propulsion Effect of spin-polarized D-3He fuel on dense plasma focus for space propulsion

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aipc..246...30m&link_type=abstract

Proceedings of the ninth symposium on space nuclear power systems. AIP Conference Proceedings, Volume 246, pp. 30-34 (1992).

Mathematics

Fueling, Heating And Ignition, Lunar, Planetary, And Deep-Space Probes

Scientific paper

Spin-polarized D-3He fusion fuel is analyzed to study its effect on the dense plasma focus (DPF) device for space propulsion. The Mather-type plasma focus device is adopted because of the ``axial'' acceleration of the current carrying plasma sheath, like a coaxial plasma gun. The D-3He fuel is chosen based on the neutron-lean fusion reactions with high charged-particle fusion products. Impulsive mode of operation is used with multi-thrusters in order to make higher thrust (F)-to-weight (W) ratio with relatively high value of specific impulse (Isp). Both current (I) scalings with I2 and I8/3 are considered for plasma pinch temperature and capacitor mass. For a 30-day Mars mission, with four thrusters, for example, the typical F/W values ranging from 0.5-0.6 to 0.1-0.2 for I2 and I8/3 scalings, respectively, and the Isp values of above 1600 s are obtained. Parametric studies indicate that the spin-polarized D-3He provides increased values of F/W and Isp over conventional D-3He fuel which was due to the increased fusion power and decreased radiation losses for the spin-polarized case.

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