A5022312861- Fusion materials and technologies
- Metal and Thin Film Mechanics
- Diamond and Carbon-based Materials Research
- Magnetic confinement fusion research
- Plasma Diagnostics and Applications
- Ion-surface interactions and analysis
- Nuclear Materials and Properties
- Surface Modification and Superhydrophobicity
- Plasma Applications and Diagnostics
- Advanced Sensor and Energy Harvesting Materials
- Particle accelerators and beam dynamics
- Semiconductor materials and devices
- Gas Sensing Nanomaterials and Sensors
- Gyrotron and Vacuum Electronics Research
- Advanced ceramic materials synthesis
- Advanced Surface Polishing Techniques
- Copper Interconnects and Reliability
- Advanced Photocatalysis Techniques
- Boron and Carbon Nanomaterials Research
- ZnO doping and properties
- Electrohydrodynamics and Fluid Dynamics
- Thin-Film Transistor Technologies
- Nanomaterials and Printing Technologies
- Dust and Plasma Wave Phenomena
- Radiation Detection and Scintillator Technologies
Institute for the Science and Technology of Plasmas
2019-2025
National Research Council
2013-2025
University of Rome Tor Vergata
2024
Institute of Plasma Physics
2010-2019
Institute for Macromolecular Studies
2019
Istituto Superiore di Sanità
2019
Institute of Condensed Matter Chemistry and Technologies for Energy
2019
Balseiro Institute
2005
Bariloche Atomic Centre
2005
A capacitively coupled radio-frequency argon plasma, used for tungsten sputtering deposition, is characterized using Langmuir probe measurements. Druyvesteyn’s method to evaluate plasma parameters through the integral of Electron Energy Distribution Function (EEDF). In pressure range analyzed (0.6–10 Pa), obtained distributions are not Maxwellian, which suggests some depletion electrons with higher energies. The compared those derived from graphical method. electron temperature via always...
This paper investigates how negative substrate bias voltage and sputtering pressure influence tungsten coatings deposited via radiofrequency magnetron sputtering. Increasing the absolute value of (up to −150 V) results in higher mass density, surface roughness, better crystallinity, improved adhesion, lower electrical resistivity. Raising (from 1 5 Pa) causes a reduction bulk decrease increased resistivity, conductivity, weaker adhesion. These findings highlight importance carefully...
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....
Gross and net erosion of tungsten (W) other plasma-facing materials in the divertor region have been investigated deuterium (D) helium (He) plasmas during dedicated experiments L- H-mode on ASDEX Upgrade after full-length experimental campaigns WEST tokamak. Net was determined via post-exposure analyses plasma-exposed samples full-size wall components, we conclude that same approach is applicable to gross if marker structures with sub-millimeter dimensions are used eliminate contribution...
The first experimental determination of the pull-off force for tungsten dust adhered to surfaces is reported. Dust deposition conducted with gas dynamics methods in a manner that mimics sticking as it occurs tokamak environment. Adhesion measurements are carried out electrostatic detachment method. adhesion strength systematically characterized spherical micron different sizes and planar varying roughness. nearly two orders magnitude smaller than predictions contact mechanics models, but...
The influence of surface roughness on the sputter yield was investigated as a function angle incidence. In this work, nm-smooth and rough samples with roughnesses µm length scale were produced by depositing thin Fe W films smooth Si substrates via magnetron sputtering. morphology determined atomic force microscopy. exposed to 6 keV D3+ ion beam (2 keV/D) under various angles incidence ranging from 0° 75° respect normal fluences order 1022 D/m2. layer thickness measured Rutherford...
Biodegradable polymers (poly(butylene succinate (PBS)), poly(butylene adipate terephthalate (PBAT)) and poly(lactic acid)/poly(butylene (PLA/PBAT)) blend) were treated in radiofrequency (13.56 MHz) low-pressure (10 Pa) oxygen with argon post-crosslinking plasma to enhance wettability adhesion properties. Surface morphology roughness modification caused by exposure observed scanning electron microscopy (SEM) atomic force (AFM). chemical modifications of plasma-treated samples evaluated...
A bilayer WO3 photoelectrode was obtained by radio frequency (RF) plasma sputtering in a reactive 40%O2/Ar atmosphere depositing two successive coatings on tungsten foil at different total gas pressures (3 Pa and 1.7 Pa, respectively), followed calcination 600 °C. Two monolayer samples deposited each of the sample inverted were also prepared. Their photoelectrocatalytic (PEC) activity evaluated both Incident Photon-to-Current Efficiency (IPCE) measurements separate evolution H2 O2 water...
Research into valid alternatives to |$^{3}$|He detectors is fundamental the affordability of new neutron spallation sources like European Spallation Source (ESS). In case ESS it also essential develop high-rate that can fully exploit increase flux relative present sources. One technologies fulfilling these requirements gas electron multiplier (GEM), since combine a high rate capability (MHz|$/$|mm|$^{2}$|), coverage area up 1 m|$^{2}$| and space resolution better than 0.5 mm. Its use as...
Surface morphology of plasma-facing components (PFCs) and its evolution during the plasma irradiation has shown to have a significant effect on erosion subsequent transport sputtered particles in plasma.This turn can influence resulting lifetime PFCs.A model for treatment surface roughness PFCs been recently incorporated into 3D Monte-Carlo ERO2.0 code.First simulations confirmed assumed (both regular stochastic numerically constructed samples) both effective sputtering yields Yeff angular...
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 Divertor Tokamak Test (DTT) facility, whose construction has started in Frascati (Italy), will be equipped with an ECRH (electron cyclotron resonance heating) system including 32 gyrotrons as microwave power sources. procurement of the first batch sources 16 MW total power, based on 170 GHz/≥ 1 MW/100 s vacuum tubes, is progress and available for DTT plasma. organized into four clusters 8 each. transmitted from Gyrotron Hall to Torus Building (THB) by a quasioptical transmission line...
Abstract Fluorocarbon films using a monomer, 1H, 2H‐perfluoro–1‐dodecene were deposited in continuous radio frequency (RF) glow discharge, the process was carried out parallel‐plate RF discharge onto stainless steel reactor order to produce coating with water‐and oil–repellent surface. Fourier‐Transform Infrared spectroscopy (FT‐IR) and X‐ray Photoelectron Spectroscopy (XPS) revealed that obtained contain mainly perfluoromethylene (CF 2 ) species. Film wettability tested water hydrocarbon...