A5026621075- Gas Dynamics and Kinetic Theory
- Plasma Diagnostics and Applications
- Vacuum and Plasma Arcs
- Atomic and Molecular Physics
- Diamond and Carbon-based Materials Research
- Laser-induced spectroscopy and plasma
- Phase Equilibria and Thermodynamics
- Quantum, superfluid, helium dynamics
- Plasma and Flow Control in Aerodynamics
- High-pressure geophysics and materials
- Cold Atom Physics and Bose-Einstein Condensates
- Magnetic confinement fusion research
- Spectroscopy and Laser Applications
- Advanced Thermodynamics and Statistical Mechanics
- Ionosphere and magnetosphere dynamics
- Fusion materials and technologies
- Particle accelerators and beam dynamics
- Combustion and Detonation Processes
- Dust and Plasma Wave Phenomena
- Catalytic Processes in Materials Science
- Plasma Applications and Diagnostics
- Astro and Planetary Science
- Optical properties and cooling technologies in crystalline materials
- Metal and Thin Film Mechanics
- Particle Dynamics in Fluid Flows
Delft University of Technology
2023
Institute for the Science and Technology of Plasmas
2019-2023
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro
2021-2023
Politecnico di Milano
2023
National Research Council
2016-2022
National Agency for New Technologies, Energy and Sustainable Economic Development
2021
University of Padua
2021
Istituto di Nanotecnologia
2016-2019
Institute of Inorganic Methodologies and Plasmas
2005-2015
Consorzio Roma Ricerche
2008-2013
A mathematical model was set up to predict browning kinetics of bread crust during baking. dough placed into a cylindrical steel mould and baked in pilot forced-convection oven at 200 250°C. The sample surface temperature measured using both type J thermocouple an infrared thermometer. Surface (ΔE) baking by tristimulus colorimeter. kinetic for obtained instant heating dried crumb on contact with refractory plate 140, 150, 165, 185, 210, 235 At all temperatures ΔE tended asymptotically ΔE∞ =...
State-to-state approaches are used to shed light on (a) thermodynamic and transport properties of LTE plasmas, (b) atomic molecular plasmas for aerospace applications (c) RF sustained parallel plate reactors. The efforts made by the group Bari in kinetics dynamics electrons species discussed from point view either master equation approach or elementary processes. Recent experimental results finally rationalized with a state-to-state based coupling vibrational Boltzmann electron energy...
The state-to-state chemical kinetic model, which considers a equation for each vibrational state of diatomic molecules, has been applied to some supersonic flow regimes and in particular boundary layer, nozzle expansion, shock wave. Nonequilibrium distribution obtained the calculations shows strong departure from equilibrium-inducing non-Arrhenius global rates, differ substantially macroscopic rates commonly used fluid-dynamic codes. evolution properties have investigated by zero-dimensional...
Transport properties of high-temperature helium and hydrogen plasmas as well Jupiter atmosphere have been calculated for equilibrium nonequilibrium conditions using higher approximations the Chapman–Enskog method. A complete database transport cross sections relevant interactions has derived, including minority species, by both ab initio phenomenological potentials. Inelastic collision integrals terms, due to resonant charge-exchange channels, also considered.
Abstract A collisional-radiative model for the Balmer emission from low-temperature Hydrogen plasma is studied. The based on most accurate cross sections available relevant processes. An uncertainty quantification study Polynomial Chaos Expansion performed ionizing and recombining plasmas with conditions typical of tandem discharge used in Neutral Beam sources magnetically confined fusion reactors. Results show that uncertainties results larger than a factor 5 are obtained, much...
Multicomponent diffusion coefficients for magnetized, equilibrium hydrogen plasma have been calculated. The composition of the is determined by taking consistently into account number allowed atomic electronic excited states (EES) as average interparticle distance. are shown to depend on inclusion realistic cross sections interactions with EES. effect an applied magnetic field and derived quantities like electrical conductivity internal reactive thermal studied explained.
We investigate the relaxation of internal temperature and concept volume viscosity in nonequilibrium gas models derived from kinetic theory. first a model with two temperatures—translational internal—where is absent. establish that regime, difference becomes proportional to divergence velocity fields define nonequilibrium, multitemperature, coefficient. next analyze convergence towards one when fast. then fast slow energy mode. there are four contributions viscosity, namely, mode pressure,...
The role of electronic excited states in affecting the thermodynamic and transport properties thermal plasma is investigated temperature range [300–100 000 K] pressure [1–103 atm] for hydrogen [10−2–103 nitrogen. Thermodynamic functions have been calculated modelling different ways levels atomic species (ground-state, Debye–Hückel confined-atom approximations). Frozen reactive specific heats as well isentropic coefficients are strongly affected by excitation whereas compensation effects...
A vibration-specific approach is employed to describe vibrational relaxation and reactive processes in shock-heated air. Models are implemented that include results from recent theoretical calculations for the relevant rate coefficients. Two sets of coefficients Zeldovich reactions nitric oxide formation, derived quasi-classical trajectory calculations, compared. The kinetics, nonequilibrium behind shock discussed detail. Results show formation kinetics sensitive details adopted effect...
Work done by the authors on Direct Simulation Monte Carlo (DSMC) simulation of thermal fluctuation in gases is summarized here. The calculation gas transport properties via Green-Kubo formulas discussed. Results from classical trajectory DSMC simulations molecular oxygen show how approach can be used to validate a particular interaction model (a Potential Energy Surface this case). experimental validation dynamics spontaneous density fluctuations also possible due its connection spectrum...
Convergence properties of the Chapman-Enskog method in presence a magnetic field for calculation transport nonequilibrium partially ionized argon have been studied emphasizing role different collision integrals. In particular, Ramsauer minimum electron-argon cross sections affects convergence at low temperature, while Coulomb collisions affect results higher temperatures. The an applied mitigates slow components affected by field.
Reactive and internal thermal conductivities for equilibrium hydrogen plasma have been calculated by the Chapman-Enskog method. The composition of is determined taking consistently into account number allowed atomic electronic excited states (EES) as average interparticle distance. coefficients depend on inclusion realistic cross sections interactions with EES. In particular, interplay between two that describe transport ionization energy analyzed.
Coupling direct simulation Monte Carlo (DSMC) simulations with classical trajectory calculations is a powerful tool to improve predictive capabilities of computational dilute gas dynamics. The considerable increase in effort outlined early applications the method can be compensated by running on massively parallel computers. In particular, Graphics Processing Unit acceleration has been found quite effective reducing computing time (CT)-DSMC simulations. aim present work study molecular...
Optical Emission Spectroscopy (OES) on the SPIDER negative ion source has been collecting data since beginning of operation in Summer 2018. The first few months were devoted to complete diagnostic commissioning and its integration with control acquisition system. Consistent sets spectroscopic have acquired under different experimental conditions, not only varying plasma filling pressure injected power but also changing RF generator frequencies strength magnetic field acting as a filter front...