Transport coefficient sensitivities in a semi-analytic model for magnetized liner inertial fusion

Lawrence, Y.; Davies, J. R.; McBride, R. D.; Sefkow, A. B.

doi:10.1063/5.0221649

Transport coefficient sensitivities in a semi-analytic model for magnetized liner inertial fusion

Journal Article · Thu Nov 07 23:00:00 EST 2024 · Physics of Plasmas

DOI:https://doi.org/10.1063/5.0221649· OSTI ID:2567735

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Performance of magnetized liner inertial fusion (MagLIF) experiments is highly dependent on transport processes including magnetized heat flows and magnetic flux losses. Magnetohydrodynamic simulations used to model these experiments require a choice of model for the transport coefficients, which are the constants of proportionality relating driving terms, such as temperature gradients and currents, to the associated heat and magnetic field transport. The coefficients have been the subject of repeated recalculation using various methods throughout the years. Using a semi-analytic MagLIF model [McBride and Slutz, Phys. Plasmas 22, 052708 (2015)], we compare models for the transport coefficients provided by Braginskii [Reviews of Plasma Physics, edited by M. A. Leontovich (Consultants Bureau, New York, 1965), Vol. 1, p. 205], Epperlein and Haines [Phys. Fluids 29, 1029 (1986)], Ji and Held [Phys. Plasmas 20, 042114 (2013)], Davies et al. [Phys. Plasmas 28, 012305 (2021)], and Sadler et al. [Phys. Rev. Lett. 126, 075001 (2021)]. The choice of model modifies magnetic-flux losses caused by the Nernst thermoelectric effect and thermal conduction losses. We present simulated results from parameter scans conducted in order to compare the effects of the different models on parameters of interest in MagLIF. In some regions of parameter space, discrepancies of up to 38% are found in integrated quantities like the fusion yield. These results may serve as a guide for experimental validation of the various models, particularly as laser preheat energies and initial axial field strengths are increased on MagLIF experiments.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: NONE; SC0017951; AR0001272; NA0004148; NA0004144

OSTI ID:: 2567735

Alternate ID(s):: OSTI ID: 2499442

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 11 Vol. 31; ISSN 1070-664X

Publisher:: American Institute of PhysicsCopyright Statement

Country of Publication:: United States

Language:: English

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Exploring magnetized liner inertial fusion with a semi-analytic model

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Transport coefficient sensitivities in a semi-analytic model for magnetized liner inertial fusion

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