A simple analytic expression for the two-dimensional minority ion distribution function generated by wave heating in the ion cyclotron range of frequencies (ICRF) is constructed from numerical solutions of the bounce-averaged quasilinear kinetic equation. Unlike the previous two-dimensional analytic solutions, this analytical representation is valid not only in the energetic tail region, but over most of the domain of velocity space of practical interest. The error of the representation in two-dimensional form is less than 40%, but most of the error being localized near upsilon /sup ///m approximately=0 and much smaller elsewhere. The representation can provide a basis for a kinetic analysis of various confinements and stability of an ICRF wave heated plasma.
Note: Proc. 17th EPS Conference on Controlled Fusion and Plasma Heating, Amsterdam, The Netherlands, June 1990, 14B, Part III, 1175 - 1178 (1990) Reference CRPP-CONF-1990-002 Record created on 2008-05-13, modified on 2017-05-12
Note: Proc. 17th EPS Conference on Controlled Fusion and Plasma Heating, Amsterdam, The Netherlands, June 1990, 14B, Part II, 958 - 961 (1990) Reference CRPP-CONF-1990-024 Record created on 2008-05-13, modified on 2017-05-12
Simultaneous operation of lower hybrid current drive and pellet injection could be successfully achieved. With peripheral ablation of the pellets by suprathermal electrons, the same net inward flux of particles is found as with deep penetration of pellets into Ohmically heated plasmas. The density profile ne(r) peaks with the same increment of the peaking factor Qn=ne0/(ne) in both cases. The global energy confinement time rises with density, tau E approximately ne, in the combined operation.
Note: Proc. 17th EPS Conference on Controlled Fusion and Plasma Heating, Amsterdam, The Netherlands, June 1990, 14B, Part II, 931 - 934 (1990) Reference CRPP-CONF-1990-027 Record created on 2008-05-13, modified on 2017-05-12
Note: Proc. 17th EPS Conference on Controlled Fusion and Plasma Heating, Amsterdam, The Netherlands, June 1990, 14B, Part III, 1476 - 1479 (1990) Reference CRPP-CONF-1990-007 Record created on 2008-05-13, modified on 2016-08-08
