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Showing 1 to 18 of 18 for “"thermonuclear fusion"”.
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Modelling the neutron radiation environment of HTS magnets in thermonuclear fusion reactors
L'abstract è presente nell'allegato / the abstract is in the attachment
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Analysis and synthesis techniques of nonlinear dynamical systems with applications to diagnostic of controlled thermonuclear fusion reactors
… Per esempio, un problema dei reattori a fusione termonucleare controllata è l’analisi di serie storiche della radiazione Dα, caratteristica del fenomeno chiamato Edge Localized Modes (ELMs). La comprensione e il 16 controllo degli ELMs sono problemi cruciali per il funzionamento di ITER, …
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Study of the effects of roughness, ultraviolet radiation, multipactoring and magnetic field on vacuum breakdown
… isolation to space propulsion. In current thermonuclear fusion projects, one of the methods of heating the plasma is through ion cyclotron radiofrequency heating. ICRF antennas are used to this end, while the voltage and hence the power possible to deliver through these antennas is limited …
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An Experimental Determination of the Effect of Cyclic Stress on Void Growth in Ultra-High-Purity Aluminum During Simultaneous 800 Mev Proton Irradiation
… magnetically and inertially confined controlled thermonuclear fusion reactors (CTR). Walter Green and Johannes Weertman (G & W) had predicted that edge dislocations, set into oscillatory motion by an applied cyclic stress, would "sweep up" excess radiation produced vacancies that would otherwise …
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Temperature-Enhanced Low-Energy Ion Sputtering of Liquid Tin: Measurements and Modeling
… Sn as a plasma-facing component in advanced thermonuclear fusion reactors and the observation of temperature-enhanced sputtering of Sn under low energy, light ion bombardment motivated further investigation of the temperature-dependent sputtering properties of Sn under various conditions. …
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Tearing-mode transport model in the reversed field pinch concept
… of a Reversed Field Pinch (RFP)-type of thermonuclear fusion reactor has been developed. The study has been focused on determining equilibrium configurations which describe a plasma evolution dominated by particular instabilities originated by plasma electrical resistivity (tearing-, or …
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Volumetric creation of ultra-high-energy-density plasma by irradiation of ordered nanowire arrays
… by the central hot-spot of highly compressed thermonuclear fusion plasmas. The depth of the heated volume is key in governing the properties of these new UHED plasmas, and is reported here for the first time in vertically aligned nanowire arrays using a buried-tracer technique. In this study, …
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The effects of flow on resistive instabilities in magnetohydrodynamics
… problems in astrophysical and controlled thermonuclear fusion research during the past four decades. This class of instability results from the introduction in the ideal MHD equations of a small but finite electrical resistivity. The addition of this term results in a relaxation of the …
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Plasma Heating By Alfven Wave In Field-Reversed Ion Ring Experiment
Controlled thermonuclear fusion is considered by many as a promising alternative energy source for the world's increasing energy demands. There are two main approaches towards thermonuclear fusion. One is called inertial confinement fusion and the other is called magnetic confinement fusion. …
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A Multi-Region Multi-Timescale Burning Plasma Dynamics Model for Tokamaks
Controlled thermonuclear fusion in tokamaks brings forth demands for burning plasma dynamics research. The deuterium-tritium fusion generates energetic alpha particles, which first transfer their energy to core electrons. The heated electrons and remaining fusion alpha particles then heat core ions …
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Study of ergodic divertor edge density regimes on the tokamaks Tore Supra and TEXTOR, and sensitivity of tunnel probe electron temperature measurements to a suprathermal electron component
Controlled thermonuclear fusion offers one possible option to meet our future energy needs in a sustainable way. Magnetic confinement in a so-called 'tokamak'-machine is a possible approach towards the achievement of a burning plasma. An important issue in this tokamak research is the transition of …
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Modelling the neutralisation process in neutral beam injectors
… fuelling and diagnosing magnetically confined thermonuclear fusion plasmas. At the Joint European Torus (JET) in Oxfordshire, England, the formation of such a beam involves passing a positive ion beam through a neutral gas target wherein beam electron-capture collisions result in a neutral beam …
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Sputter deposition and plasma modification of tungsten alloys for nuclear fusion applications
The ITER reactor aims to be first thermonuclear fusion device to demonstrate net fusion power. Critical plasma-facing components in the reactor will be made of tungsten, but helium plasma irradiation is known to embrittle tungsten metal. A future reactor will therefore need an alternative material …
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Sputter deposition and plasma modification of tungsten alloys for nuclear fusion applications
The ITER reactor aims to be first thermonuclear fusion device to demonstrate net fusion power. Critical plasma-facing components in the reactor will be made of tungsten, but helium plasma irradiation is known to embrittle tungsten metal. A future reactor will therefore need an alternative material …
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A study on the ion temperature gradient driven turbulence in tokamak plasmas
… resources are without doubt needed. Nuclear fusion promises to supply large amounts of energy, with minimal environmental impact. This has motivated at least sixty years of research in which substantial progress has been achieved, but without breakthrough result. Nuclear fusion can occur at …
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Collimation of deuterium / 3-helium fusion products for advanced spacecraft propulsion and power
… spacecraft propulsion and power systems involve thermonuclear fusion plasma systems. In this class it is well accepted that d-He3 fusion is the most promising of the fuel candidates for spacecraft applications as the 14.7 MeV protons carry up to 80% of the total fusion power while ‘s have …
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Thermally-Induced Behavior of Liquid hydrogen Isotopes Inside Inertial Confinement Fusion Targets
Made available in DSpace on 2017-07-06T18:59:15Z (GMT). No. of bitstreams: 2 Varadarajan_V_MS.pdf: 49825925 bytes, checksum: 4f7150b2046f5da207949c6dec06c9c4 (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1987
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Liquid Metal Waterfall Engineering in an Inertial confinement Fusion Reactor System Using Internal Tritium Breeding Pellets
Made available in DSpace on 2017-07-06T18:42:11Z (GMT). No. of bitstreams: 2 Adams_Bradley_J_MS.pdf: 41791610 bytes, checksum: 39e215dbafc657c339c0b77672663b47 (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1983