Bulletin of the American Physical Society
65th Annual Meeting of the APS Division of Plasma Physics
Monday–Friday, October 30–November 3 2023; Denver, Colorado
Session PP11: Poster Session VI:
MFE:DIII-D and conventional tokamaks II;MHD and stability; Analytic techniques in MFE;
ICF: Pinches and hohlraum physics
SPACE: Astrophysical plasmas
LTP:Low temperature plasma applications
MC:Miniconference: Shocks
2:00 PM - 5:00 PM
Wednesday, November 1, 2023
Room: Plaza ABC
Abstract: PP11.00097 : The electron cyclotron maser instability in laser ionized plasmas*
Presenter:
Thales Silva
(Instituto Superior Tecnico)
Authors:
Thales Silva
(Instituto Superior Tecnico)
Pablo J Bilbao
(GoLP/IPFN, IST, ULisboa, Portugal)
Luis O Silva
(Instituto Superior Tecnico)
Under the presence of external magnetic fields, these ring distributions can live over larger timescales. They present inverted Landau populations, so in a magnetized plasma, they are prone to kinetic instabilities such as the electron cyclotron maser [4]. Using theory and particle-in-cell simulations with the code OSIRIS [5], we investigate conditions for the unset of the maser and other competing instabilities using state-of-the-art laser systems. We show parameter regimes where the maser dominates and compare results for the radiation signature observed in simulation with results from kinetic theory.
[1] X. Xu et al., PRAB 25, 011302 (2022)
[2] C. Zhang et al., Sci. Adv. 5, eaax4545 (2019)
[3] P. J. Bilbao and L. O. Silva., PRL 130, 165101 (2023)
[4] K. R. Chu, Rev. Mod. Phys. 76, 489 (2004)
[5] R. A. Fonseca et al., in Computational Science — ICCS 2002, edited by P. M. A. Sloot, A. G. Hoekstra, C. J. K. Tan, and J. J. Dongarra (Springer Berlin Heidelberg, 2002) p. 342
*We acknowledge the EuroHPC Joint Undertaking for awarding this project access to the EuroHPC supercomputer LUMI, hosted by CSC (Finland) and the LUMI consortium through a EuroHPC Regular Access call. This project was funded by the In Pairs ERC grant nº 695088 and FCT (Portugal) project 2022.02230.PTDC.
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