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  • Letter
  • Open Access

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

M. Bailly-Grandvaux1,*, R. Florido2, C. A. Walsh3, G. Pérez-Callejo4, F. N. Beg1, P. Bradford5, M. A. Gigosos4, R. C. Mancini6, C. McGuffey7 et al.

F. Suzuki-Vidal8, C. Vlachos5, and J. J. Santos5,†

  • 1Center for Energy Research, University of California-San Diego, La Jolla, California 92093, USA
  • 2iUNAT-Departamento de Física, Universidad de Las Palmas de Gran Canaria, E-35017 Las Palmas de Gran Canaria, Spain
  • 3Lawrence Livermore National Laboratory, Livermore, California 94550, USA
  • 4Departamento de Física Teórica Atómica y Óptica, Universidad de Valladolid, E-47011 Valladolid, Spain
  • 5Centre Lasers Intenses et Applications (CELIA), Université de Bordeaux-CNRS-CEA, UMR 5107, F-33405 Talence, France
  • 6Physics Department, University of Nevada, Reno, Nevada 89557, USA
  • 7General Atomics, San Diego, California 92121, USA
  • 8Blackett Laboratory, Imperial College London, London SW7 2AZ, United Kingdom

  • *mbaillyg@ucsd.edu
  • †joao.santos@u-bordeaux.fr
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Phys. Rev. Research 6, L012018 – Published 19 January, 2024

DOI: https://doi.org/10.1103/PhysRevResearch.6.L012018

Abstract

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 D2-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.

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Phys. Rev. Research 6, L012018– Published 19 January, 2024
  • Received 31 May 2023
  • Revised 28 September 2023
  • Accepted 8 December 2023
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