PRS Scoping Study 2. ZPIMP Predictions for Radiation Yields on a JUPITER-Class Generator
NAVAL RESEARCH LAB WASHINGTON DC
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A limited radiation-magnetohydrodynamics simulation code, ZPIMP, is used to predict radiation yields in various energy bins on a JUPITER-class machine. Elements of the simulation code are reviewed and calculations are made to compare the code with experimental K-shell yields from aluminum z-pinches on the SATURN generator. For a chosen viscosity parameter the simulated yields agree remarkably with the data. The same code is applied on an early version of the linear inductive voltage adder, but the projected krypton yields arc disappointing. By increasing the compression through a lower viscosity parameter, the subsequent yields are significantly improved for weak implosions, showing that such a case is highly sensitive to the details of the dynamics. The capabilities of a -60 MA JUPITER-class generator are surveyed with the ZPIMP code and the results for argon, krypton, and xenon are compared against the anticipated required source yields in five energy bins ranging from 0 to 60 keV. In the lowest bins 0-1 and 1-5 keVJUPITER is well suited to reach the required yields, but in the highest bins 15-30 and 30-60 keV the present calculations indicate that improvements in load design, understanding, and control are necessary to meet the requirements. Limitations of the ZPIMP calculations and directions for improving the PRS estimates for JUPITER are derived from the present work. Z-pinch, Radiation yields, Radiation hydrodynamics, Plasma radiation sources.
- Electric Power Production and Distribution
- Nuclear Weapons
- Plasma Physics and Magnetohydrodynamics