Search results for "RF heating"

showing 2 items of 2 documents

Modelling of JET hybrid plasmas with emphasis on performance of combined ICRF and NBI heating

2018

International audience; During the 2015--2016 JET campaigns, many efforts have been devoted to the exploration of high-performance plasma scenarios envisaged for DT operation in JET. In this paper, we review various key recent hybrid discharges and model the combined ICRF NBI heating. These deuterium discharges with deuterium beams had the ICRF antenna frequency tuned to match the cyclotron frequency of minority H at the centre of the tokamak coinciding with the second harmonic cyclotron resonance of D. The modelling takes into account the synergy between ICRF and NBI heating through the second harmonic cyclotron resonance of D beam ions, allowing us to assess its impact on the neutron rate…

Nuclear and High Energy PhysicsLight nucleusfusionPlasma heatingicrf heatingNuclear engineeringion-cyclotron rangeCyclotronJET hybrid plasmaICRF heating; NBI heating; JET hybrid plasmas; fusion enhancement; ION-CYCLOTRON RANGE; ENHANCEMENT; FUSION7. Clean energy01 natural sciences010305 fluids & plasmaslaw.inventionICRF heatingfusion enhancementdt plasmaslawNBI heating0103 physical sciences010306 general physicsjet hybrid plasmastokamakenhancementfusion enhancement; ICRF heating; JET hybrid plasmas; NBI heatingnbi heatingJet (fluid)Emphasis (telecommunications)PlasmaCondensed Matter PhysicsJET hybrid plasmasSettore ING-IND/20 - Misure e Strumentazione NucleariresonanceEnvironmental science[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
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Dielectric Characterization of Fruit Nectars at Low RF Frequencies

2015

Dielectric properties of apple, apricot, peach, and pear nectars were studied in the frequency range from 15 kHz to 30 MHz and the temperature range from 25 to 60 degrees C. Both the relative dielectric constants and the dielectric loss factors decreased by increasing frequency and increased linearly with increasing temperature with values in the order 10(4)-10(2) and 10(5)-10(2), respectively. The power dissipation densities and the power penetration depths were found to increase linearly with temperature. Power dissipation densities remained essentially constant for all the samples while power penetration depths decreased significantly on increasing frequency. The dependence of each of th…

PermittivityMaterials scienceRF heatingSettore CHIM/10 - Chimica Degli AlimentiAnalytical chemistryPhysics::OpticsRelative permittivityDielectricLow frequencyAtmospheric temperature rangeDissipationFruit nectarPermittivityDielectric heatingdielectric constant dielectric loss dielectric spectroscopy fruits apple juice conduction fruit nectar RF heating.Dielectric constantDielectric lossFruit juiceDielectric loss factorLow frequencySettore CHIM/02 - Chimica FisicaFood ScienceInternational Journal of Food Properties
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