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Human Factors, Instrumentation & Controls
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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Latest News
Proving DRACO will deliver
The United States is now closer than it has been in over five decades to launching the first nuclear thermal rocket into space, thanks to DRACO—the Demonstration Rocket for Agile Cislunar Orbit.
J. J. MacFarlane, R. R. Peterson, P. Wang, G. A. Moses
Fusion Science and Technology | Volume 26 | Number 3 | November 1994 | Pages 886-890
Inertial Confinement Fusion Reactor, Reactor Target, and Driver | Proceedings of the Eleventh Topical Meeting on the Technology of Fusion Energy New Orleans, Louisiana June 19-23, 1994 | doi.org/10.13182/FST94-A40266
Articles are hosted by Taylor and Francis Online.
We present results from radiation-hydrodynamics calculations which show the central role resonant self-absorption plays in reducing radiative energy loss rates in high-gain ICF target chamber plasmas. Calculations were performed using a non-LTE radiative transfer model which we have recently coupled to our target chamber radiation-hydrodynamics code. The lower radiation fluxes escaping the plasma, which occur due to the self-absorption of line radiation in their optically thick cores, lead to significantly lower temperature increases at the surface of the target chamber first wall. The calculations were performed for the SIRIUS-P laser-driven direct-drive ICF power reactor. In this conceptual design study, high-gain targets release approximately 400 MJ of energy in the center of a gas-filled target chamber. The target debris ions and x-rays are stopped in the gas, and the energy is reradiated to the chamber wall over a much longer time scale. Because the time scales are comparable to the time it takes to thermally conduct energy away from the first surface, the thermal stresses and erosion rates for the first wall are greatly reduced.