A5056335039- Fusion materials and technologies
- Magnetic confinement fusion research
- Nuclear Materials and Properties
- Diamond and Carbon-based Materials Research
- Metal and Thin Film Mechanics
- Plasma Diagnostics and Applications
- Superconducting Materials and Applications
- Ion-surface interactions and analysis
- Particle accelerators and beam dynamics
- Congenital heart defects research
- Ionosphere and magnetosphere dynamics
- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- Laser-Plasma Interactions and Diagnostics
- Hydrogen Storage and Materials
- Graphene research and applications
- Carbon and Quantum Dots Applications
- Nanocluster Synthesis and Applications
- Advanced materials and composites
- Advanced Sensor and Energy Harvesting Materials
- Heat Transfer and Boiling Studies
- Dust and Plasma Wave Phenomena
- Autism Spectrum Disorder Research
- Surface Modification and Superhydrophobicity
- Advanced Materials Characterization Techniques
National Research Council
2010-2024
Institute for the Science and Technology of Plasmas
2020-2024
Culham Science Centre
2024
Culham Centre for Fusion Energy
2024
Sapienza University of Rome
2019-2023
Institute of Plasma Physics
2005-2019
University of Milano-Bicocca
2009
The provision of a particle and power exhaust solution which is compatible with first-wall components edge-plasma conditions key area present-day fusion research mandatory for successful operation ITER DEMO. work package plasma-facing (WP PFC) within the European programme complements laboratory experiments, i.e. in linear plasma devices, electron ion beam loading facilities, studies performed toroidally confined magnetic such as JET, ASDEX Upgrade, WEST etc. connection both groups done via...
Abstract This work investigates the role of surface topography in sputtering process tungsten (W) exposed to helium plasma using GyM linear device. Surfaces with varying roughness, from sub-nanometer ≅1 μm, and different textures, including random-like regular configurations, were studied. The samples at energies 30 350 eV, fluence ≅4.3e24 He + m -2 temperatures well below bulk W fuzz formation threshold ≅700 °C. interpretation experimental results was supported by simulations ERO2.0 code....
This paper reports the main recent results of RFX-mod fusion science activity.The device is characterized by a unique flexibility in terms accessible magnetic configurations.Axisymmetric and helically shaped Reversed-field pinch equilibria have been studied, along with tokamak plasmas wide range q(a) regimes (spanning from 4 down to 1.2 values).The full configurations between two, so-called ultra low-q ones, has explored, aim studying specific physical issues common all equilibria, such as,...
Post-mortem and in-situ evidence is presented in favor of the generation high-velocity solid dust during explosion-like interaction runaway electrons with metallic plasma-facing components FTU. The freshly-produced source secondary de-localized wall damage through impacts that lead to formation craters, which have been reproduced dedicated light gas gun impact tests. This novel mechanism, potential importance for ITER DEMO, further supported by surface analysis, multiple theoretical...
Knowledge about the corrosion mechanisms of magnesium alloy (AZ91D) in Ionic Liquids (IL) is fundamental interest because absence water these environments which eliminates hydrogen corrosion. Furthermore IL show remarkable properties that make them ideal lubricant materials. The rate very slow at room temperature, but becomes much faster 200 °C. A interaction layer formed and least two different processes contribute to its formation: metals constituting adsorption degradation products.
GyM is a linear plasma device operating at Istituto per la Scienza e Tecnologia dei Plasmi, Consiglio Nazionale delle Ricerche, Milan, with the original aim of studying basic physics, such as turbulent processes. Since 2014, experimental program has been mainly focused on issue plasma-material interaction (PMI) for magnetic confinement nuclear fusion applications. consists stainless steel vacuum chamber (radius and length 0.125 m 2.11 m), pumping system, gas injection 10 field coils two...
The RFX-mod device is operated both as a reversed field pinch (RFP), where advanced regimes featuring helical shape develop, and tokamak. Due to its flexibility, contributing the solution of key issues in roadmap ITER DEMO, including MHD instability control, internal transport barriers, edge turbulence, isotopic effect, high density limit three-dimensional (3D) non-linear modelling. This paper reports recent advancements understanding self-organized states, strong electron barrier, RFP...
Plasma-wall interactions have been studied in the full-W ASDEX Upgrade during its dedicated helium campaign. Relatively clean plasmas with a He content of >80% could be obtained by applying ion cyclotron wall conditioning (ICWC) discharges upon changeover from D to He. However, co-deposited layers significant amounts and were measured on W samples exposed ICWC at low-field side (outer) midplane. This is sign local migration accumulation materials residual fuel regions shadowed direct plasma...
Nitrogen (N) seeding is routinely applied in tokamaks with tungsten (W) walls to control the power exhaust toward divertor. Open questions, concerning interaction of N W, are influence ion energy and W temperature on retention implanted erosion by deuterium (D) nitride being formed. Moreover, extremely high particle fluxes ITER DEMO will erode tiles sputtered atoms re-deposit forming W-based layers a different behaviour seeded D plasmas. In this work, films morphology structure were exposed...
This paper reports the highlights of RFX-mod fusion science programme since last 2010 IAEA Fusion Energy Conference. The focused on two main goals: exploring potential reversed field pinch (RFP) magnetic configuration and contributing to solution key technology problems in roadmap ITER. Active control several plasma parameters has been a tool this endeavour. New upgrades system for active magnetohydrodynamic (MHD) stability are underway will be presented paper. Unique among existing devices,...
An extensive Raman investigation of few‐layer graphene structures, obtained using a plasma microjet technique, is presented. spectroscopy represents unique method to characterize specific features these systems. Excitation energies both in the visible and deep ultraviolet range are exploited, allowing extract main structural properties in‐house deposited samples. Particular attention given determination stacking order structures. The results presented here also validate as an efficient...
A comprehensive analysis of composition and morphology metallic micrometric particles collected in FTU during the 2013 shut-down is presented. The data-set analyzed result years experimental activity which a full metal machine since beginning operation with liquid lithium limiter (LLL) from 2005. It was found that population, consisting flakes, smashed spheroidally shaped plasma facing components (mainly SS Mo), exhibits an unexpectedly high, up to 70 wt%, fraction magnetic grains. change...
Poly(butylene succinate) (PBS) films were processed by a radio frequency (RF; 13.56 MHz) low-pressure plasma of oxygen and argon/oxygen, an with argon post-crosslinking to improve their wettability property. Specimens treated at different times fixed power processing 100 W (0.3 W/cm2) pressure 10 Pa. A significant change in hydrophilicity evaluated the water contact angle was observed. The drop decreased from 80° for untreated sample values lower than 5° plasma-treated samples. effect ageing...
We report an experimental study on the tritiding capabilities over a long period of intermetallic compound Zr(Fe0.5V0.5)2. The was carried out with prospect using alloy as chemical converter to reduce HTO. Two identical getter beds, containing 1 gram in powder form each, were used experiments. While one them exploited determine tritium isotherms virgin alloy, other bed loaded at 75% stoichiometry 354 Ci and left age for 1500 days. then unloaded aged determined twice check repeatability. main...
Iron-tungsten (Fe-W) mixed films were exposed to the low flux deuterium plasma of GyM in order study behavior sputtering yield with ion fluence and temperature samples. From literature, it is known that an increase former lowers Fe-W layers' as a consequence preferential Fe leading enrichment W outermost layers. An opposite trend was instead found for latter probably due inter-diffusion (effective from 200 °C) resulting suppression enrichment. Moreover, 500 °C, also segregation surface...