FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2034376486> ?p ?o ?g. }

• W2034376486 endingPage "1106" @default.
• W2034376486 startingPage "1101" @default.
• W2034376486 abstract "At and around minima or maxima of the safety factor q, overlapping, and therefore toroidicity induced coupling of drift eigenmodes centred on neighbouring rational surfaces rl,m defined by q(rl,m) = m/l and rl,m?1 defined by q(rl,m?1) = (m?1)/l, is generally negligible; l and m (m?1) are the toroidal and (main) poloidal mode numbers, respectively. Under these conditions, a careful analysis shows that the growth rate of the ion temperature gradient (ITG) mode is proportional to the absolute value of the magnetic shear parameter; its radial width and frequency (in the E ? B rotating frame) are larger in the axisymmetric torus than in the plasma slab or cylinder, especially at small values of k? ai (k? is the poloidal mode number and ai the characteristic ion Larmor radius). These results provide a straightforward theoretical interpretation of the origin of internal ion transport barriers (ITBs) in discharges with negative central shear if the ITG instability is indeed the main channel for ion energy transport. In agreement with recent experiments, the mechanism does not degrade for Te~Ti, an important result for extrapolation to reactors. Once initiated, an ITB will locally increase the curvature of the ion temperature profile and, consequently, the gradients of the radial electric field and E ? B rotation profiles (until neoclassical (or sub-neoclassical) transport comes into play). The damping associated with velocity shear yields an upper bound on the unstable mode number range, whereas Landau damping is expected to introduce a lower bound. In cases where toroidal effects are subdominant, the ratio of the damping rate associated with velocity shear to the growth rate associated with magnetic shear leads naturally to the Hamaguchi-Horton parameter (divided by the factor ?i-2/3 which characterizes the departure from the instability threshold (?i is the ratio of the density and temperature length scales)) when introducing the most unfavourable mode number. Toroidal effects are always dominant for sufficiently weak magnetic shear or sufficiently large values of |LN|/R (where LN is the density gradient length), and therefore before steepening of the profiles has occurred near the zero magnetic shear layer; the counterpart of the Hamaguchi-Horton characteristic parameter appropriate to that case is also obtained, considering again the most unfavourable mode number." @default.
• W2034376486 created "2016-06-24" @default.
• W2034376486 creator A5070216312 @default.
• W2034376486 date "2001-08-01" @default.
• W2034376486 modified "2023-09-26" @default.
• W2034376486 title "First principles model of internal transport barriers in negative central shear discharges" @default.
• W2034376486 cites W1970188822 @default.
• W2034376486 cites W1974760079 @default.
• W2034376486 cites W1985050245 @default.
• W2034376486 cites W1985939342 @default.
• W2034376486 cites W1988029560 @default.
• W2034376486 cites W1989675717 @default.
• W2034376486 cites W1994445908 @default.
• W2034376486 cites W1998292601 @default.
• W2034376486 cites W1998861985 @default.
• W2034376486 cites W1999080605 @default.
• W2034376486 cites W1999693269 @default.
• W2034376486 cites W2011785101 @default.
• W2034376486 cites W2016524747 @default.
• W2034376486 cites W2029132382 @default.
• W2034376486 cites W2035398400 @default.
• W2034376486 cites W2039381917 @default.
• W2034376486 cites W2043571870 @default.
• W2034376486 cites W2050543092 @default.
• W2034376486 cites W2059662208 @default.
• W2034376486 cites W2060955760 @default.
• W2034376486 cites W2069245197 @default.
• W2034376486 cites W2093909801 @default.
• W2034376486 cites W2144347174 @default.
• W2034376486 cites W2159063695 @default.
• W2034376486 cites W2326052431 @default.
• W2034376486 cites W2023476440 @default.
• W2034376486 cites W3132505835 @default.
• W2034376486 doi "https://doi.org/10.1088/0029-5515/41/8/313" @default.
• W2034376486 hasPublicationYear "2001" @default.
• W2034376486 type Work @default.
• W2034376486 sameAs 2034376486 @default.
• W2034376486 citedByCount "20" @default.
• W2034376486 countsByYear W20343764862015 @default.
• W2034376486 countsByYear W20343764862017 @default.
• W2034376486 crossrefType "journal-article" @default.
• W2034376486 hasAuthorship W2034376486A5070216312 @default.
• W2034376486 hasBestOaLocation W20343764862 @default.
• W2034376486 hasConcept C121332964 @default.
• W2034376486 hasConcept C159985019 @default.
• W2034376486 hasConcept C192562407 @default.
• W2034376486 hasConcept C57879066 @default.
• W2034376486 hasConcept C96035792 @default.
• W2034376486 hasConceptScore W2034376486C121332964 @default.
• W2034376486 hasConceptScore W2034376486C159985019 @default.
• W2034376486 hasConceptScore W2034376486C192562407 @default.
• W2034376486 hasConceptScore W2034376486C57879066 @default.
• W2034376486 hasConceptScore W2034376486C96035792 @default.
• W2034376486 hasIssue "8" @default.
• W2034376486 hasLocation W20343764861 @default.
• W2034376486 hasLocation W20343764862 @default.
• W2034376486 hasLocation W20343764863 @default.
• W2034376486 hasOpenAccess W2034376486 @default.
• W2034376486 hasPrimaryLocation W20343764861 @default.
• W2034376486 hasRelatedWork W1976965697 @default.
• W2034376486 hasRelatedWork W2066132327 @default.
• W2034376486 hasRelatedWork W2962551473 @default.
• W2034376486 hasRelatedWork W3019965347 @default.
• W2034376486 hasRelatedWork W313994579 @default.
• W2034376486 hasRelatedWork W3152919790 @default.
• W2034376486 hasRelatedWork W3157874185 @default.
• W2034376486 hasRelatedWork W3193305737 @default.
• W2034376486 hasRelatedWork W4281997549 @default.
• W2034376486 hasRelatedWork W4315618979 @default.
• W2034376486 hasVolume "41" @default.
• W2034376486 isParatext "false" @default.
• W2034376486 isRetracted "false" @default.
• W2034376486 magId "2034376486" @default.
• W2034376486 workType "article" @default.