Modeling of chirping toroidal Alfvén eigenmodes in NSTX
Sign Up to like & getrecommendations! Published in 2019 at "Physics of Plasmas"
DOI: 10.1063/1.5115399
Abstract: Modulation of mode amplitude and frequency of TAE modes, observed experimentally and referred to as chirping, is investigated using a guiding center code and a δf formalism. Chirping is observed as the development in time… read more here.
Keywords: mode; frequency; alfv eigenmodes; modeling chirping ... See more keywords
Compressional Alfvén eigenmodes in rotating spherical tokamak plasmas
Sign Up to like & getrecommendations! Published in 2017 at "Plasma Physics and Controlled Fusion"
DOI: 10.1088/1361-6587/aa58fd
Abstract: Spherical tokamaks often have a considerable toroidal plasma rotation of several tens of kHz. Compressional Alfven eigenmodes in such devices therefore experience a frequency shift, which if the plasma were rotating as a rigid body,… read more here.
Keywords: compressional alfv; plasma; alfv eigenmodes; plasma rotation ... See more keywords
Detection and investigation of chirping Alfvén eigenmodes with heavy ion beam probe in the TJ-II stellarator
Sign Up to like & getrecommendations! Published in 2018 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/aabcf8
Abstract: Alfvén eigenmodes were studied in the low magnetic shear flexible heliac TJ-II NBI-heated plasmas by heavy ion beam probe (HIBP), which is capable to measure simultaneously the oscillations of the plasma electric potential, density and… read more here.
Keywords: frequency; ion beam; alfv eigenmodes; heavy ion ... See more keywords
Isotope impact on Alfvén eigenmodes and fast ion transport in DIII-D
Sign Up to like & getrecommendations! Published in 2024 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/ad38cc
Abstract: Measurements of beam driven Alfvén Eigenmode (AE) activity in matched deuterium (D) and hydrogen (H) DIII-D plasmas show a dramatic difference in unstable mode activity and fast ion transport for a given injected beam power.… read more here.
Keywords: ion transport; fast ion; beam; alfv eigenmodes ... See more keywords
Active Control of Alfvén Eigenmodes by Externally Applied 3D Magnetic Perturbations.
Sign Up to like & getrecommendations! Published in 2023 at "Physical review letters"
DOI: 10.1103/physrevlett.130.035101
Abstract: The suppression and excitation of Alfvén eigenmodes have been experimentally obtained, for the first time, by means of externally applied 3D perturbative fields with different spatial spectra in a tokamak plasma. The applied perturbation causes… read more here.
Keywords: fast ion; control alfv; alfv eigenmodes; active control ... See more keywords
Toroidal Alfvén Eigenmodes in Globus-M Spherical Tokamak Plasma
Sign Up to like & getrecommendations! Published in 2018 at "Technical Physics Letters"
DOI: 10.1134/s1063785018010133
Abstract: Conditions of the excitation of toroidal Alfvén eigenmodes (TAEs) and their inf luence on the confinement of fast particles into the Globus-M spherical tokamak have been studied by KINX code calculations of the magnetohydrodynamic spectra… read more here.
Keywords: plasma; alfv eigenmodes; globus spherical; toroidal alfv ... See more keywords