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

Abstract

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.

Authors:
ORCiD logo [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE; LANL Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1482921
Report Number(s):
LA-UR-17-23111
Journal ID: ISSN 0741-3335
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Plasma Physics and Controlled Fusion
Additional Journal Information:
Journal Volume: 61; Journal Issue: 2; Journal ID: ISSN 0741-3335
Publisher:
IOP Science
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

McDevitt, Christopher J., Tang, Xianzhu, and Guo, Zehua. Yield reduction via the Knudsen layer effect in a mixture of fuel and pusher material. United States: N. p., 2018. Web. doi:10.1088/1361-6587/aaee5a.
McDevitt, Christopher J., Tang, Xianzhu, & Guo, Zehua. Yield reduction via the Knudsen layer effect in a mixture of fuel and pusher material. United States. doi:10.1088/1361-6587/aaee5a.
McDevitt, Christopher J., Tang, Xianzhu, and Guo, Zehua. Mon . "Yield reduction via the Knudsen layer effect in a mixture of fuel and pusher material". United States. doi:10.1088/1361-6587/aaee5a.
@article{osti_1482921,
title = {Yield reduction via the Knudsen layer effect in a mixture of fuel and pusher material},
author = {McDevitt, Christopher J. and Tang, Xianzhu and Guo, Zehua},
abstractNote = {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.},
doi = {10.1088/1361-6587/aaee5a},
journal = {Plasma Physics and Controlled Fusion},
issn = {0741-3335},
number = 2,
volume = 61,
place = {United States},
year = {2018},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on November 5, 2019
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