The Bosque Campaign on the National Ignition Facility to Understand the Coupling of Incomplete Material Mixing and Incomplete Thermalization on Thermonuclear Burn*

Incomplete mixing and thermalization play a critical role in determining thermonuclear reaction rates in inertial confinement fusion (ICF) implosions [1-3]. Understanding this relationship is therefore critical to determine the impact of contaminant in ICF hot spots on yield.  The Bosque campaign is a polar-direct drive separated reactants implosion platform on the NIF to systematically study these effects in support of model development for radiation-hydrodynamics codes.  Bosque capsules contain 3D printed deuterated plastic lattices and are filled with mixtures of tritium with various other gases. By varying the composition of the gas fill, we can control the level of thermalization between the reactants.  By varying the lattice geometry, we can control the level of mixedness between the reactants. In this talk, we will discuss plans for the campaign as well as the results of platform development shots performed on NIF and OMEGA as well as plans for supporting campaigns on NIKE and LCLS.

 

 

[1] Haines et al., Nature Comm. 11:544, 2020.

[2] Albright et al., Phys. Plasmas 29:022702, 2022.

[3] Haines et al, Phys. Plasmas, 30:072705, 2023.