Synchrotron Radiation Considerations in the Dense Plasma Focus (DPF) magnetoplasma-Dynamic (MPD) Thruster
Final rept. 16 May-12 Jun 1991
PHILLIPS LAB EDWARDS AFB CA
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The Dense Plasma Focus DPF computer model has been modularized and updated. The code now assumes an inherent value beta 1 upon which further calculations are based. The DPF model is using deuterium D and Helium-3 as the fuels and hydrogen as the propellant. D-D side reactions have been included. I sub sp values in the range of 900-1000 have been obtained for operating temperatures in the tens of keVs regime, as well thrust-to-weight ratios on the order of 0.0001. The majority of the work has been devoted to the synchrotron radiation emissions from the DPF. It has been shown that for beta 1, no synchrotron radiation will be emitted. If the beta value is 1, then reabsorption of the synchrotron radiation will become a concern for plasma operating temperatures exceeding approximately 62 keV. Calculations have been made assuming a plasma pinch mass density of 0.0022 kgcu m. The characteristic synchrotron radiation absorption length, lambda sub o, for a beta 1 case has been found to be less than the radius of the plasma pinch.
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