Search results for "Nuclear Energy and Engineering"

showing 6 items of 596 documents

Single Event Upsets Induced by Direct Ionization from Low-Energy Protons in Floating Gate Cells

2017

Floating gate cells in advanced NAND Flash memories, with single-level and multi-level cell architecture, were exposed to low-energy proton beams. The first experimental evidence of single event upsets by proton direct ionization in floating gate cells is reported. The dependence of the error rate versus proton energy is analyzed in a wide energy range. Proton direct ionization events are studied and energy loss in the overlayers is discussed. The threshold LET for floating gate errors in multi-level and single-level cell devices is modeled and technology scaling trends are analyzed, also discussing the impact of the particle track size. peerReviewed

protonitNuclear and High Energy PhysicsProtonfloating gate devicesNAND gateFlash memories01 natural sciencesComputer Science::Hardware ArchitectureIonizationFlash memories; floating gate devices; protons; single event effects; Nuclear and High Energy Physics; Nuclear Energy and Engineering; Electrical and Electronic Engineering0103 physical sciencesHardware_ARITHMETICANDLOGICSTRUCTURESElectrical and Electronic Engineeringflash-muistit010302 applied physicsPhysicsRange (particle radiation)ta114ta213protons010308 nuclear & particles physicsbusiness.industryElectrical engineeringsingle event effectsNon-volatile memoryNuclear Energy and EngineeringLogic gateAtomic physicsbusinessEvent (particle physics)Energy (signal processing)IEEE Transactions on Nuclear Science
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Measurements of Low-Energy Protons using a Silicon Detector for Application to SEE Testing

2021

A silicon detector with a fast electronics chain is used for the dosimetry of protons in the range 0.5-5 MeV at the Centro Nacional de Aceleradores (CNA) 3 MV Tandem laboratory in Seville, Spain. In this configuration, measurements can be performed in pulsed mode, using a digitizer to record event-by-event proton energy depositions. The distributions of deposited energy were obtained thanks to a calibration with an alpha source. Measurements of flux and deposited energy are used to enable single event effect (SEE) testing on selected static random access memories (SRAMs).

protonitNuclear and High Energy PhysicspiiSilicon detectorMaterials sciencebusiness.industrySingle event effectskalibrointiLow energysäteilyfysiikkaNuclear Energy and EngineeringilmaisimetdosimetritOptoelectronicsSilicon detectorElectrical and Electronic EngineeringDetectors and Experimental TechniquesLow-energy protonsbusinessIEEE Transactions on Nuclear Science ( Volume: 69, Issue: 3, March 2022)
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Characterization of a CZT focal plane small prototype for hard X-ray telescope

2005

The promise of good energy and spatial resolution coupled with high efficiency and room temperature operation has fuelled a large international effort to develop cadmium zinc telluride (CZT) for hard X-ray applications. We are involved on the development of a hard X-ray telescope based on multilayer optics and focal plane detector operative in the 10-80 keV energy range. This telescope requires a high efficiency focal plane providing both fine spatial resolution and spectroscopy with a compact and robust design. This paper reports preliminary results on the characterization both in spectroscopic and spatial response of two small pixellated CZT detectors (10times10times1 mm3 and 10times10tim…

spectroscopyNuclear and High Energy PhysicsPhysics::Instrumentation and DetectorsX-ray telescopeParticle detectorlaw.inventionTelescopechemistry.chemical_compoundOpticslawElectronicsElectrical and Electronic EngineeringImage resolutionPhysicsPixelbusiness.industryAstrophysics::Instrumentation and Methods for AstrophysicsCadmium zinc tellurideCZTCardinal pointNuclear Energy and Engineeringchemistrypixel detectorfocal planehard X-rayOptoelectronicsbusinessIEEE Transactions on Nuclear Science
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The effect of defect location on coating fragmentation patterns under biaxial tension

2005

Fragmentation of a coating possessing orthogonal preferential crack propagation directions is modeled for equibiaxial tensile loading. Two plausible cracking scenarios are compared, caused by flaws randomly distributed over the area of the coating or along the coating fragment edges. The two fragmentation scenarios considered are shown to yield qualitatively different fragment patterns.

strength distributionMaterials scienceFissureMechanical EngineeringAerospace EngineeringOcean EngineeringStatistical and Nonlinear PhysicsFracture mechanicscoatingsengineering.materialCondensed Matter PhysicsCrackingmedicine.anatomical_structureNuclear Energy and EngineeringCoatingFragmentation (mass spectrometry)Biaxial tensionfragmentationUltimate tensile strengthCrack initiationengineeringmedicineForensic engineeringComposite materialCivil and Structural Engineering
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Is there a Nordic model of final disposal of spent nuclear fuel? Governance insights from Finland and Sweden

2017

This paper explores citizen participation in Swedish and Finnish regulatory processes for final disposal of spent nuclear fuel (SNF). Finland and Sweden are considered the most advanced worldwide in term of SNF disposal plans. Our aim is to analyze the institutional waste management frameworks, focusing on the role of civil society organizations (CSOs); how lay-people and civil society organizations have been able to participate and contribute to radioactive waste licensing processes; and the nature of radioactive waste risk debates. We review official documents of the waste companies and nuclear safety authorities, plus information from civil society organizations and laypeople. Our theore…

ta520EngineeringCivil societyEnergy Engineering and Power Technology010501 environmental sciencesPublic administration01 natural sciences050602 political science & public administrationspent nuclear fuelcivil regulationFinland0105 earth and related environmental sciencesSwedenRenewable Energy Sustainability and the Environmentbusiness.industryCorporate governance05 social sciencesRadioactive wasteTechnocracyNuclear powerSpent nuclear fuel0506 political scienceFuel TechnologyNuclear Energy and EngineeringEconomyNordic modelbusinessSocial Sciences (miscellaneous)Energy Research & Social Science
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Realizing the social acceptance of community renewable energy: A process-outcome analysis of stakeholder influence

2014

This study shows how stakeholders influence the development of community renewable energy (CRE) schemes and how they are influenced by their outcome. It relies on information collected during 41 structured interviews with local people involved in CRE initiatives in seven regions of Europe. The interviews were thematically analyzed to identify different types of stakeholder influence. The findings show that stakeholder influence on CRE schemes take place at three distinct levels: macro, intercommunity and intracommunity. In addition, key stakeholders can support or hinder the development of a project according to whether or not they perceive that the output of the project may benefit or harm…

ta520Knowledge managementRenewable Energy Sustainability and the Environmentbusiness.industryProcess (engineering)StakeholderEnergy Engineering and Power Technologystakeholder influencePhase (combat)Outcome (game theory)Fuel TechnologyHarmNuclear Energy and Engineeringcommunity renewable energyStructured interviewprocess and outcomeStakeholder analysisBusinessMacrota512Social Sciences (miscellaneous)Energy Research and Social Science
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