Conveners
other application
- vanni antoni (cnr)
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Mr
Vivien Croes
(Laboratoire de Physique des Plasmas/Safran Aircraft Engines)
03/03/2017, 09:30
Oral
Despite electric propulsion (EP) having its beginning in the 1960's, its full potential has only been realized in the last few years, with all-electric communication satellites and large small-satellite constellation projects. Since Hall effect thrusters (HETs) are one of the most successful EP technologies, there is an increasing need for accurate and predictive models, in order to develop...
Dr
Francesco Taccogna
(CNR-Nanotec-PLasMI)
03/03/2017, 10:00
Oral
A realistic three-dimensional fully kinetic particle simulation of a Hall-effect thruster discharge and plume regions has been attempted.
The model consists of a Particle-in-Cell (PIC) methodology tracking electrons and propellant ions in their self-consistent electric field. A detailed secondary electron emission representation is also implemented in addition with electron-atoms and...
Pierluigi Veltri
(LNL)
03/03/2017, 10:30
Oral
Neutral Beam Injectors (NBI) are fundamental to increase the plasma temperature in magnetic confinement fusion devices. In the perspective of dense and large plasmas foreseen in advanced experiments, the use of negative ions is needed to efficiently produce neutrals in MeV energy range, able to penetrate the plasma core. In the framework of the accompanying activities in support to the ITER...
Dr
Gianpiero Colonna
(Plasmi Lab at CNR-NANOTEC)
03/03/2017, 10:50
Oral
The evolution of atmospheric pressure hydrogen plasma under the action of repetitively ns electrical pulse has been investigated using a 0D state-to-state kinetic model that self-consistently couples the master equation of heavy particles and the Boltzmann equation for free electrons. The kinetic model includes, together with atomic hydrogen states and the vibrational kinetics of H2 ground...
Dr
Francesco Taccogna
(CNR-Nanotec-PLasMI)
03/03/2017, 11:15
Oral
It is well known that negative ions used for neutral beam injection in thermonuclear fusion reactor are mostly produced by conversion of hot atoms on caesiated surface. In this contribution we are investigating the possibility to produce hot atom by molecular dissociation process in HT configuration, i.e. finding the best operative conditions to increase the molecular dissociation in place of...
Dr
Giuseppe Torrisi
(LNS)
03/03/2017, 11:35
Oral
We present a numerical approach to solve the 3D Maxwell-Lorentz system with the aim of investigating the interaction of the electromagnetic waves with the magnetized non-homogeneous plasma produced inside Electron Cyclotron Resonance Ion Sources. The FEM COMSOL Multiphysics® software was used to compute the electromagnetic field in a cavity filled by the anisotropic-inhomogeneous plasma,...
Dr
Igor Kaganovich
(PPPL)
03/03/2017, 12:05
Oral
Producing an overdense background plasma for neutralization purposes with a density that is high compared to the ion beam density is not always experimentally possible. We show experimentally [1] and making use of particle-in-cell simulations [2,3] that even an underdense background plasma with a small relative density can achieve high neutralization of intense ion beam pulses if enough...
Prof.
Pavarin Daniele
(University of Padua)
03/03/2017, 12:35
Oral
Propulsion technology based on helicon thruster was always considered promising because in principle it allows for long life time and versatility in using different type of gases. It is relatively compact with respect to other thruster technologies and thus is also considered promising for high power applications.
Moreover, helicon thruster technology has some remarkable features which makes...
