Yield reduction via the Knudsen layer effect in a mixture of fuel and pusher material

McDevitt, Christopher J.; Tang, Xianzhu; Guo, Zehua

doi:10.1088/1361-6587/aaee5a

Title: Yield reduction via the Knudsen layer effect in a mixture of fuel and pusher material

Journal Article · 04 November 2018 · Plasma Physics and Controlled Fusion

DOI: https://doi.org/10.1088/1361-6587/aaee5a · OSTI ID:1482921

^[1]; Tang, Xianzhu ^[1]; Guo, Zehua ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Hydrodynamic mix in inertial confinement fusion capsules produces chunk mix between deuterium-tritium fuel and inert pusher materials. The characteristic size of the intermingled fuel and pusher materials can be rapidly reduced by fluid mix, especially when the streamlines of the flow field are chaotic. This leads to an increasing Knudsen number for the fuel segments and a decreasing size of the pusher remnant with respect to the fuel ion mean-free-path. Finally, the former exacerbates Knudsen layer yield degradation due to fast ion losses, while the latter tends to alleviate Knudsen layer yield reduction due to other kinetic effects such as diffusive tunneling.

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Research Organization:: Los Alamos National Laboratory (LANL)

Sponsoring Organization:: LANL Laboratory Directed Research and Development (LDRD) Program; USDOE

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 1482921

Report Number(s):: LA-UR-17-23111

Journal Information:: Plasma Physics and Controlled Fusion, Journal Name: Plasma Physics and Controlled Fusion Journal Issue: 2 Vol. 61; ISSN 0741-3335

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

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