Impact of strong magnetization in cylindrical plasma implosions with applied B-field measured via x-ray emission spectroscopy

Bailly-Grandvaux, M.; Florido, R.; Walsh, C. A.; Pérez-Callejo, G.; Beg, F. N.; Bradford, P.; Gigosos, M. A.; Mancini, R. C.; McGuffey, C.; Suzuki-Vidal, F.; Vlachos, C.; Santos, J. J.

doi:10.1103/PhysRevResearch.6.L012018

Title: Impact of strong magnetization in cylindrical plasma implosions with applied B-field measured via x-ray emission spectroscopy

Journal Article · 18 January 2024 · Physical Review Research

DOI: https://doi.org/10.1103/PhysRevResearch.6.L012018 · OSTI ID:2281956

;

; Walsh, C. A.; Pérez-Callejo, G.; Beg, F. N.; Bradford, P.;

; Mancini, R. C.; McGuffey, C.;

;

Magnetization is a key strategy for enhancing inertial fusion performance, though accurate characterization of magnetized dense plasmas is needed for a better comprehension of the underlying physics. Measured spectra from imploding Ar-doped $D_{2}$ -filled cylinders at the OMEGA laser show distinctive features with and without an imposed magnetic field. A multizone spectroscopic diagnosis leads to quantitative estimates of the plasma conditions, namely revealing a 50% core temperature rise at half mass density when a 30-T seed field is applied. Concurrently, experimental spectra align well with predictions from extended-magnetohydrodynamics simulations, providing strong evidence that the attained core conditions at peak compression are consistent with the impact of a 10-kT compressed field. These results pave the way for the validation of magnetized transport models in dense plasmas and for future magnetized laser implosion experiments at a larger scale. Published by the American Physical Society 2024

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: European Union; Royal 406 Society (UK); Spanish Ministry of Science and Innovation; USDOE; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC); l’Agence Nationale de la Recherche (ANR)

Grant/Contract Number:: AC52-07NA27344; NA0003940; SC0022250

OSTI ID:: 2281956

Report Number(s):: LLNL-JRNL-862047; L012018

Journal Information:: Physical Review Research, Journal Name: Physical Review Research Journal Issue: 1 Vol. 6; ISSN 2643-1564; ISSN PPRHAI

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Title: Impact of strong magnetization in cylindrical plasma implosions with applied B-field measured via x-ray emission spectroscopy

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