Bulletin of the American Physical Society
64th Annual Meeting of the APS Division of Plasma Physics
Volume 67, Number 15
Monday–Friday, October 17–21, 2022; Spokane, Washington
Session TO06: Magnetized High-energy-density Plasma
9:30 AM–12:30 PM,
Thursday, October 20, 2022
Room: Ballroom 111 C
Chair: Alla Safronova, UNR
Abstract: TO06.00005 : Characterizing the effect of strong magnetization in cylindrically imploded hot dense plasmas using dopant spectroscopy techniques and benchmarked simulations*
10:18 AM–10:30 AM
Presenter:
Mathieu Bailly-Grandvaux
(University of California, San Diego)
Authors:
Mathieu Bailly-Grandvaux
(University of California, San Diego)
Ricardo Florido
(University of Las Palmas de Gran Canaria, Spain)
Gabriel Peréz-Callejo
(University of Valladolid, Spain)
Christopher A Walsh
(Lawrence Livermore Natl Lab)
Christopher McGuffey
(General Atomics)
Joao J Santos
(University of Bordeaux)
Francisco Suzuki-Vidal
(Imperial College London / First Light Fusion)
Christos Vlachos
(University of Bordeaux, France)
Jacob Saret
(University of California, San Diego)
Marco A Gigosos
(University of Valladolid, Spain)
Philip BRADFORD
(University of Bordeaux, France)
Roberto C Mancini
(University of Nevada, Reno)
Farhat N Beg
(University of California, San Diego)
We present the design, numerical simulations, and results of magnetized cylindrical implosions performed at the OMEGA facility. The cylindrical targets are filled with Ar-doped D2 gas and are symmetrically imploded using a 40-beam, 14.5 kJ, 1.5 ns laser drive. The implosions are magnetized using the MIFEDS capability, delivering a seed B-field of 24 T along the axis of the cylindrical targets. X-ray framed imaging is used to follow the implosions' trajectory, and the compressed core conditions are obtained via Ar K-shell emission. We show that the Ar emission spectra are highly reproducible, and we observed distinct changes in the plasma conditions of the compressed core between the cases with and without the applied B-field. Advanced atomic codes and radiation transport calculations based on Gorgon spatial profiles provide an excellent match to the data. When magnetizing the implosions, the compressed B-field reaches ~10 kT and the subsequent anisotropy of the heat conduction along the radial direction enhanced the average temperature of the hot spot by ~70% (from ~1 keV to 1.7 keV).
*Work supported by the DOE Office of Science Grant No. DE-SC0022250, by NNSA/NLUF Grant No. DE-NA0003940, Grant No. PID2019-108764RB-I00 (MICINN, Spain), and EUROfusion Consortium under Grant No. 101052200.
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