Artículos de revistas
Critical Power For Lower Hybrid Current Drive
Registro en:
Brazilian Journal Of Physics. , v. 27, n. 1, p. 26 - 32, 1997.
1039733
2-s2.0-0031505211
Autor
De Assis A.S.
Sakanaka P.H.
De Azevedo C.A.
Neto J.B.
Institución
Resumen
We have solved numerically the quasilinear Fokker-Planck equation which models the critical power for lower hybrid wave current drive. An exact value for the critical power necessary for current saturation, for tokamak current drive experiments, has been obtained. The nonlinear treatment presented here leads to a final profile for the parallel distribution function which is a plateau only in a part of the resonance region. This form of the distribution function is intermediate between two well known results: a plateau through out the resonance region for the linear strong-source regime, Dwave » Dcoll and no plateau at all in the resonance region for the linear weak-source regime, Dwave « Dcoll [1]. The strength of the external power source and the value of the dc electric field are treated as given parameters in the integration scheme. 27 1 26 32 Fisch, N.J., (1987) Rev. Mod. Phys., 59, p. 175 Yamamoto, T., (1980) Phys. Rev. Lett., p. 716 Kubo, H., (1983) Phys. Rev. Lett., 50, p. 1994 Fisch, N.J., (1978) Phys. Rev. Lett., 41, p. 873 Watari, T., Review of Japanese results on heating and current drive (1993) Plasma Phys. Contr. Fusion, 35 (A), pp. A181-A198 Ushigusa, K., Kondoh, T., Naito, O., Ikeda, Y., Ide, S., Seki, M., Wolfe, S.W., Imai, T., (1992) Nuclear Fusion, 32, p. 11 Ide, S., Imai, T., Ushigusa, K., Naito, O., Ikeda, Y., Nemoto, M., Sato, M., (1992) Nuclear Fusion, 32, p. 2 Karney, C.F.F., (1986) Computer Phys. Rep., 4, p. 183 Bonoli, P.T., Englade, R.C., (1986) Phys. Fluids, 29, p. 9 Muschietti, L.M., Vaclavik, J., Appert, K., (1982) Plasma Phys., 24, p. 8 Succi, S., (1987) Quasilinear Modelling of Lower Hybrid Current Drive and Related Problems, , Ph D thesis, EPFL-CRPP, Lausanne, Suisse Succi, S., Appert, K., Muschietti, J., Werringer, J.M., (1984) Phys. Lett., 106 A, p. 137 Vaclavik, J., Appert, K., Kritz, A.H., Muschietti, L., (1983) Plasma Phys., 25, p. 1295 Takase, Y., Honda, M., Ikeda, Y., Imai, T., Sakamoto, K., Tsuji, S., Uehara, K., Ushigusa, K., (1988) Nuclear Fusion, 28, p. 6 Takase, Y., (1988) Nuclear Fusion, 28, p. 1112 De Assis, A.S., Busnardo-Neto, J., (1988) Phys. Fl., 31, p. 943 Bruder, C., Vlaclavik, J., Appert, K., (1991) Nonlinear Interaction of Lower Hybrid Waves, in Joint Varena-lausanne International Workshop on "Theory of Fusion Plasmas", , Varena, Italy Hasegawa, A., Mima, K., (1978) J. Geophys. Res., 83, p. 1117 De Assis, A.S., Busnardo-Neto, J., (1989) Il Nuovo Cimento, 104 B, p. 263 Kulsrud, R.M., Sun, Y.-Ch., Fallon, H.A., (1973) Phys. Rev. Lett., 31, p. 690 Liu, C.S., An, Z.G., Boyd, D.A., Lee, Y.C., Muschietti, L., Appert, K., Vaclavik, J., (1982) Comments Plasma Phys. Contr. Fusion, 7, p. 2 Parail, V.V., Pogutse, O.P., (1978) Nucl. Fusion, 18, p. 303 An, Z.G., Liu, C.S., Lee, Y.C., Boyd, D.A., (1982) Phys. Fluids, 25, p. 997 Engelmann, F., (1994) Lower Hybrid Heating and Current Drive in ITER: Operation Scenarios and Outline System Design, , (European Coordinating Committee on Lower Hybrid Waves (CCLH)), Association Euratom-CEA, DRFC/CAD, EUR-CEA-FC-1529 Kupfer, K., Moreal, D., Litaudon, X., (1993) Statistical Theory of Wave Propagation and Multipass Absorption for Current Drive in Tokamakcs, , Association Euratom-CEA, Report EUR-CAE-FC-1496, DRFC/CAD, July