Mario Ludovico Podesta

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Energetic particle instabilities in fusion plasmas

Remarkable progress has been made in diagnosing energetic particle instabilities on present-day machines and in establishing a theoretical framework for describing them. This overview describes the much improved diagnostics of Alfven instabilities and mode ...

IOP Publishing Ltd2013

Electrostatic instabilities, turbulence and fast ion interactions in the TORPEX device

Ambrogio Fasoli, Ivo Furno, Paolo Ricci, Benoît Labit, Christian Gabriel Theiler, Joaquim Loizu Cisquella, Mario Ludovico Podesta, Francesca Maria Poli, Gennady Plyushchev, Lucia Isabel Federspiel

Electrostatic turbulence, related structures and their effect on particle, heat and toroidal momentum transport are investigated in TORPEX simple magnetized plasmas using high-resolution diagnostics, control parameters, linear fluid models and nonlinear nu ...

Institute of Physics2010

Langmuir probe-based observables for plasma-turbulence code validation and application to the TORPEX basic plasma physics experiment

Ambrogio Fasoli, Ivo Furno, Paolo Ricci, Benoît Labit, Christian Gabriel Theiler, Mario Ludovico Podesta, Francesca Maria Poli, Stefan Müller

The methodology for plasma-turbulence code validation is discussed, with focus on the quantities to use for the simulation-experiment comparison, i.e., the validation observables, and application to the TORPEX basic plasma physics experiment [A. Fasoli , P ...

American Institute of Physics (AIP)2009

Cross-field transport by instabilities and blobs in a magnetized toroidal plasma

Ambrogio Fasoli, Ivo Furno, Paolo Ricci, Benoît Labit, Christian Gabriel Theiler, Mario Ludovico Podesta, Francesca Maria Poli

The mechanisms for anomalous transport across the magnetic field are investigated in a toroidal magnetized plasma. The role of plasma instabilities and macroscopic density structures (blobs) is discussed. Examples from a scenario with open magnetic field l ...

2008

Dynamics of plasma blobs in a shear flow

Ambrogio Fasoli, Ivo Furno, Benoît Labit, Christian Gabriel Theiler, Mario Ludovico Podesta

2008

Experimental Observation of the Blob-Generation Mechanism from InterchangeWaves in a Plasma

Ambrogio Fasoli, Ivo Furno, Paolo Ricci, Benoît Labit, Christian Gabriel Theiler, Mario Ludovico Podesta, Francesca Maria Poli

The mechanism for blob generation in a toroidal magnetized plasma is investigated using time-resolved measurements of two-dimensional structures of electron density, temperature, and plasma potential. The blobs are observed to form from a radially elongate ...

2008

Two-dimensional time resolved measurements of toroidal velocity correlated with density blobs in magnetized plasmas

Ambrogio Fasoli, Ivo Furno, Benoît Labit, Mario Ludovico Podesta

2008

The role of the density gradient on intermittent cross-field transport events in a simple magnetized toroidal plasma

Ambrogio Fasoli, Ivo Furno, Paolo Ricci, Benoît Labit, Christian Gabriel Theiler, Mario Ludovico Podesta, Francesca Maria Poli

Intermittent cross-field particle transport events (ITEs) are studied in the basic toroidal device TORPEX [TORoidal Plasma EXperiment, A. Fasoli et al., Phys. Plasmas 13, 055902 (2006)], with focus on the role of the density gradient. ITEs are due to the i ...

American Institute of Physics (AIP)2008

Mechanism for blob generation in the TORPEX toroidal plasma

Ambrogio Fasoli, Ivo Furno, Jonathan Graves, Paolo Ricci, Stephan Brunner, Benoît Labit, Christian Gabriel Theiler, Mario Ludovico Podesta, Francesca Maria Poli

The mechanism for blob generation is detailed in the toroidal magnetized plasma of the TORPEX device [ Fasoli et al., Phys. Plasmas 13, 055902 (2006) ] using an experimental configuration, which features a plasma region dominated by a coherent wave and a r ...

2008

Transition from drift to interchange instabilities in an open magnetic field line configuration

Ambrogio Fasoli, Paolo Ricci, Mario Ludovico Podesta, Francesca Maria Poli

The transition from a regime dominated by drift instabilities to a regime dominated by pure interchange instabilities is investigated and characterized in the simple magnetized toroidal device TORPEX [TORoidal Plasma EXperiment, A. Fasoli et al., Phys. of ...

American Institute of Physics (AIP)2008

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Energetic particle instabilities in fusion plasmas

Ambrogio Fasoli, Mario Ludovico Podesta

IOP Publishing Ltd2013

Langmuir probe-based observables for plasma-turbulence code validation and application to the TORPEX basic plasma physics experiment

Ambrogio Fasoli, Ivo Furno, Paolo Ricci, Benoît Labit, Christian Gabriel Theiler, Mario Ludovico Podesta, Francesca Maria Poli, Stefan Müller

American Institute of Physics (AIP)2009