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Comparison of ablators for the polar direct drive exploding pusher platform

Harvard Dataverse (Africa Rice Center, Bioversity International, CCAFS, CIAT, IFPRI, IRRI and WorldFish)

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Title Comparison of ablators for the polar direct drive exploding pusher platform
 
Identifier https://doi.org/10.7910/DVN/33GJUL
 
Creator Heather D. Whitley, G. Elijah Kemp, Charles Yeamans, Zachary Walters, Brent E. Blue, Warren Garbett, Marilyn Schneider, R. Stephen Craxton, Emma M. Garcia, Patrick W. McKenty, Maria Gatu-Johnson, Kyle Caspersen, John I. Castor, Markus Däne, C. Leland Ellison, James Gaffney, Frank R. Graziani, John Klepeis, Natalie Kostinski, Andrea Kritcher, Brandon Lahmann, Amy E. Lazicki, Hai P. Le, Richard A. London, Brian Maddox, Michelle Marshall, Madison E. Martin, Burkhard Militzer, Abbas Nikroo, Joseph Nilsen, Tadashi Ogitsu, John Pask, Jesse E. Pino, Michael Rubery, Ronnie Shepherd, Philip A. Sterne, Damian C. Swift, Lin Yang, Shuai Zhang
 
Publisher Harvard Dataverse
 
Description We examine the performance of pure boron, boron carbide, high density carbon, and boron nitride ablators in the polar direct drive exploding pusher (PDXP) platform. The platform uses the polar direct drive conguration at the National Ignition Facility to drive high ion temperatures in a room temperature capsule and has potential applications for plasma physics studies and as a neutron source. The higher tensile strength of these materials compared to plastic enables a thinner ablator to support higher gas pressures, which could help optimize its performance for plasma physics experiments, while ablators containing boron enable the possiblity of collecting addtional data to constrain models of the platform. Applying recently developed and experimentally validated equation of state models for the boron materials, we examine the performance of these materials as ablators in 2D simulations, with particular focus on changes to the ablator and gas areal density, as well as the predicted symmetry of the inherently 2D implosion.
 
Subject Physics
ablator materials
exploding pusher
inertial confinement fusion
polar-direct drive
radiation hydrodynamic simulations