000119752 001__ 119752
000119752 005__ 20180913054305.0
000119752 0247_ $$2doi$$a10.1063/1.873930
000119752 022__ $$a1070-664X
000119752 037__ $$aARTICLE
000119752 245__ $$aApplicability of the ballooning transform to trapped ion modes
000119752 260__ $$c2000
000119752 269__ $$a2000
000119752 336__ $$aJournal Articles
000119752 520__ $$aIn the scope of the study of low-frequency electrostatic microinstabilities in tokamak plasmas, attention has been focused on the effect of trapped ions. The ballooning transform has been applied to the gyrokinetic equation, for the case of a large aspect ratio plasma with circular magnetic surfaces. A new eigenvalue code has been developed to solve the resulting integral equation, for the case of adiabatic electrons and full ion dynamics, thus taking into account both circulating and trapped ions. The goal has been to assess the validity of the ballooning transform for trapped ion modes. A scan over the parameter k(theta)rho(L) has been carried out to determine a lower threshold for applicability of the ballooning representation. Illustrative results of trapped ion modes (TIM) are presented, together with the comparison with the ones obtained using a global gyrokinetic code, for low toroidal wave numbers, and a local kinetic dispersion relation. (C) 2000 American Institute of Physics. [S1070-664X(00)01204-0].
000119752 700__ $$0241145$$aFalchetto, G. L.$$g115082
000119752 700__ $$0240132$$aVaclavik, J.$$g106604
000119752 700__ $$aMaccio, M.
000119752 700__ $$0240124$$aBrunner, S.$$g100615
000119752 700__ $$0240104$$aVillard, L.$$g106653
000119752 773__ $$j7$$k4$$q1196-1203$$tPhysics of Plasmas
000119752 909C0 $$pCRPP
000119752 909C0 $$0252028$$pSPC
000119752 909CO $$ooai:infoscience.tind.io:119752$$pSB$$particle
000119752 937__ $$aCRPP-ARTICLE-2000-042
000119752 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000119752 980__ $$aARTICLE