A comparison of non-local electron transport models for laser-plasmas relevant to inertial confinement fusion
Abstract
Here, we compare the reduced non-local electron transport model developed to Vlasov-Fokker-Planck simulations. Two new test cases are considered: the propagation of a heat wave through a high density region into a lower density gas, and a one-dimensional hohlraum ablation problem. We find that the reduced model reproduces the peak heat flux well in the ablation region but significantly over-predicts the coronal preheat. The suitability of the reduced model for computing non-local transport effects other than thermal conductivity is considered by comparing the computed distribution function to the Vlasov-Fokker-Planck distribution function. It is shown that even when the reduced model reproduces the correct heat flux, the distribution function is significantly different to the Vlasov-Fokker-Planck prediction. Two simple modifications are considered which improve agreement between models in the coronal region.
- Authors:
-
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Univ. of York, York (United Kingdom)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1438751
- Alternate Identifier(s):
- OSTI ID: 1374228
- Report Number(s):
- LLNL-JRNL-730526
Journal ID: ISSN 1070-664X; TRN: US1900512
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 24; Journal Issue: 8; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION
Citation Formats
Sherlock, M., Brodrick, J. P., and Ridgers, C. P. A comparison of non-local electron transport models for laser-plasmas relevant to inertial confinement fusion. United States: N. p., 2017.
Web. doi:10.1063/1.4986095.
Sherlock, M., Brodrick, J. P., & Ridgers, C. P. A comparison of non-local electron transport models for laser-plasmas relevant to inertial confinement fusion. United States. https://doi.org/10.1063/1.4986095
Sherlock, M., Brodrick, J. P., and Ridgers, C. P. Tue .
"A comparison of non-local electron transport models for laser-plasmas relevant to inertial confinement fusion". United States. https://doi.org/10.1063/1.4986095. https://www.osti.gov/servlets/purl/1438751.
@article{osti_1438751,
title = {A comparison of non-local electron transport models for laser-plasmas relevant to inertial confinement fusion},
author = {Sherlock, M. and Brodrick, J. P. and Ridgers, C. P.},
abstractNote = {Here, we compare the reduced non-local electron transport model developed to Vlasov-Fokker-Planck simulations. Two new test cases are considered: the propagation of a heat wave through a high density region into a lower density gas, and a one-dimensional hohlraum ablation problem. We find that the reduced model reproduces the peak heat flux well in the ablation region but significantly over-predicts the coronal preheat. The suitability of the reduced model for computing non-local transport effects other than thermal conductivity is considered by comparing the computed distribution function to the Vlasov-Fokker-Planck distribution function. It is shown that even when the reduced model reproduces the correct heat flux, the distribution function is significantly different to the Vlasov-Fokker-Planck prediction. Two simple modifications are considered which improve agreement between models in the coronal region.},
doi = {10.1063/1.4986095},
journal = {Physics of Plasmas},
number = 8,
volume = 24,
place = {United States},
year = {Tue Aug 08 00:00:00 EDT 2017},
month = {Tue Aug 08 00:00:00 EDT 2017}
}
Web of Science
Figures / Tables:
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Works referencing / citing this record:
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Figures / Tables found in this record: