title: Time-resolved ion velocity distribution in a cylindrical Hall thruster: heterodyne-based experiment and modeling.
abstract: Time-resolved variations of the ion velocity distribution function (IVDF) are measured in the cylindrical Hall thruster using a novel heterodyne method based on the laser-induced fluorescence technique. This method consists in inducing modulations of the discharge plasma at frequencies that enable the coupling to the breathing mode. Using a harmonic decomposition of the IVDF, one can extract each harmonic component of the IVDF from which the time-resolved IVDF is reconstructed. In addition, simulations have been performed assuming a sloshing of the IVDF during the modulation that show agreement between the simulated and measured first order perturbation of the IVDF.
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
authors.forename: A
authors.initials: A
authors.lastname: Diallo
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
authors.forename: S
authors.initials: S
authors.lastname: Keller
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
authors.forename: Y
authors.initials: Y
authors.lastname: Shi
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
authors.forename: Y
authors.initials: Y
authors.lastname: Raitses
authors.affiliation: CNRS, ICARE, Orléans, France.
authors.forename: S
authors.initials: S
authors.lastname: Mazouffre