Matches in SemOpenAlex for { <https://semopenalex.org/work/W2133969985> ?p ?o ?g. }
Showing items 1 to 86 of
86
with 100 items per page.
- W2133969985 abstract "Electron Bernstein waves are a mode of oscillation in a plasma, thought a candidate for providing radiofrequency heating and non-inductive current drive in spherical tokamaks. Previous studies of these modes have relied on neglecting or simplifying the contribution made by relativistic effects. This work presents fully relativistic numerical results that show the mode’s dispersion relation for a wide range of parameters. Relativistic effects are shown to shift the location of the resonance as in previous studies, but the effects beyond this are shown to matter only in high temperature (10-20keV) plasmas. At these higher temperatures however, the fully relativistic model differs markedly. The assumption that the mode is electrostatic is looked at, and found to be inadequate for describing fully the electron bernstein modes dispersion relation. Simple estimates that neglect toroidal effects show current drive efficiency is expected to be an order of magnitude higher than that for conventional electron cyclotron current drive using the O or X modes. It is shown for a number of model tokamaks that heating the center of the plasma and driving current using EBWs is impossible launching from the outside due to strong damping of the wave at higher cyclotron harmonics. Results from a code based on a more complicated semi-analytic model of current drive, that includes toroidal effects and calculates the average current drive over the magnetic surface, confirm the higher expected current drive efficiency, and the code is shown to give good agreement with a FokkerPlanck code. The higher values of associated with the EBWs are shown to mitigate the delterious effects of trapping on current drive efficiency to a small extent. The details of the magnetic field are found to be unimportant to the calculation beyond determing where the wave is absorbed. The codes written to produce these results are outlined before each set of results. The last of these is considerably faster than conventional Fokker-Planck codes and a useful tool in studying electron cyclotron current drive in the future." @default.
- W2133969985 created "2016-06-24" @default.
- W2133969985 creator A5018172656 @default.
- W2133969985 date "2007-01-01" @default.
- W2133969985 modified "2023-09-27" @default.
- W2133969985 title "Electron cyclotron heating and current drive using the electron Bernstein modes" @default.
- W2133969985 cites W1515812801 @default.
- W2133969985 cites W2024380237 @default.
- W2133969985 cites W2028575454 @default.
- W2133969985 hasPublicationYear "2007" @default.
- W2133969985 type Work @default.
- W2133969985 sameAs 2133969985 @default.
- W2133969985 citedByCount "0" @default.
- W2133969985 crossrefType "dissertation" @default.
- W2133969985 hasAuthorship W2133969985A5018172656 @default.
- W2133969985 hasConcept C116515362 @default.
- W2133969985 hasConcept C121332964 @default.
- W2133969985 hasConcept C147120987 @default.
- W2133969985 hasConcept C148043351 @default.
- W2133969985 hasConcept C15001198 @default.
- W2133969985 hasConcept C165801399 @default.
- W2133969985 hasConcept C175361016 @default.
- W2133969985 hasConcept C184779094 @default.
- W2133969985 hasConcept C185544564 @default.
- W2133969985 hasConcept C185592680 @default.
- W2133969985 hasConcept C188414643 @default.
- W2133969985 hasConcept C202579712 @default.
- W2133969985 hasConcept C26873012 @default.
- W2133969985 hasConcept C2778439541 @default.
- W2133969985 hasConcept C30475298 @default.
- W2133969985 hasConcept C3079626 @default.
- W2133969985 hasConcept C39527238 @default.
- W2133969985 hasConcept C55493867 @default.
- W2133969985 hasConcept C62520636 @default.
- W2133969985 hasConcept C81263218 @default.
- W2133969985 hasConcept C82706917 @default.
- W2133969985 hasConcept C97355855 @default.
- W2133969985 hasConceptScore W2133969985C116515362 @default.
- W2133969985 hasConceptScore W2133969985C121332964 @default.
- W2133969985 hasConceptScore W2133969985C147120987 @default.
- W2133969985 hasConceptScore W2133969985C148043351 @default.
- W2133969985 hasConceptScore W2133969985C15001198 @default.
- W2133969985 hasConceptScore W2133969985C165801399 @default.
- W2133969985 hasConceptScore W2133969985C175361016 @default.
- W2133969985 hasConceptScore W2133969985C184779094 @default.
- W2133969985 hasConceptScore W2133969985C185544564 @default.
- W2133969985 hasConceptScore W2133969985C185592680 @default.
- W2133969985 hasConceptScore W2133969985C188414643 @default.
- W2133969985 hasConceptScore W2133969985C202579712 @default.
- W2133969985 hasConceptScore W2133969985C26873012 @default.
- W2133969985 hasConceptScore W2133969985C2778439541 @default.
- W2133969985 hasConceptScore W2133969985C30475298 @default.
- W2133969985 hasConceptScore W2133969985C3079626 @default.
- W2133969985 hasConceptScore W2133969985C39527238 @default.
- W2133969985 hasConceptScore W2133969985C55493867 @default.
- W2133969985 hasConceptScore W2133969985C62520636 @default.
- W2133969985 hasConceptScore W2133969985C81263218 @default.
- W2133969985 hasConceptScore W2133969985C82706917 @default.
- W2133969985 hasConceptScore W2133969985C97355855 @default.
- W2133969985 hasLocation W21339699851 @default.
- W2133969985 hasOpenAccess W2133969985 @default.
- W2133969985 hasPrimaryLocation W21339699851 @default.
- W2133969985 hasRelatedWork W136926741 @default.
- W2133969985 hasRelatedWork W1562296743 @default.
- W2133969985 hasRelatedWork W1618410746 @default.
- W2133969985 hasRelatedWork W1637308491 @default.
- W2133969985 hasRelatedWork W1652463650 @default.
- W2133969985 hasRelatedWork W168375886 @default.
- W2133969985 hasRelatedWork W2002188798 @default.
- W2133969985 hasRelatedWork W2014690279 @default.
- W2133969985 hasRelatedWork W2051672800 @default.
- W2133969985 hasRelatedWork W2176152166 @default.
- W2133969985 hasRelatedWork W2803774933 @default.
- W2133969985 hasRelatedWork W2885825916 @default.
- W2133969985 hasRelatedWork W3004609377 @default.
- W2133969985 hasRelatedWork W3012083953 @default.
- W2133969985 hasRelatedWork W3013313358 @default.
- W2133969985 hasRelatedWork W3088054385 @default.
- W2133969985 hasRelatedWork W3146526332 @default.
- W2133969985 hasRelatedWork W3155860697 @default.
- W2133969985 hasRelatedWork W3200332011 @default.
- W2133969985 hasRelatedWork W2001591789 @default.
- W2133969985 isParatext "false" @default.
- W2133969985 isRetracted "false" @default.
- W2133969985 magId "2133969985" @default.
- W2133969985 workType "dissertation" @default.