Fluid description of ponderomotive force compatible with the kinetic one in a warm plasma Hojo, Hitoshi [Tsukuba Univ., Ibaraki (Japan). Plasma Research Center]; Ogawa, Tomoko; Kono, Mitsuo 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; PONDEROMOTIVE FORCE; PLASMA FLUID EQUATIONS; PLASMA WAVES; QUASILINEAR PROBLEMS; DISTRIBUTION FUNCTIONS; 700370; PLASMA FLUID AND MHD PROPERTIES The ponderomotive effect of electromagnetic wave fields is practically very important in such cases as RF stabilization, RF-induced transport in magnetically confined plasma and so on. However, theoretically there are still discrepancies among the expressions derived by a number of authors. In this short note, attention is restricted to the discrepancy between fluid and kinetic expressions of the ponderomotive force often found in literatures dealing with warm plasma, and where it stems from and how it is resolved are discussed. The ponderomotive force density of electromagnetic wave fields based on Vlasov theory has been obtained. Also the fluid ponderomotive force density is given. The case of electrostatic high frequency waves in a unmagnetized plasma is considered. The discrepancy between both expressions was found. This discrepancy in a warm plasma is due to the lack of a wave-induced contribution to the thermal pressure in the fluid description of ponderomotive force density. The fluid description of the ponderomotive force can be made compatible with the kinetic one in warm plasma. (K.I.). National Inst. for Fusion Science, Nagoya (Japan) OSTI; NTIS (US Sales Only); INIS Japan 1991-07-01 English Technical Report Other Information: PBD: Jul 1991 Medium: X; Size: 11 p. https://doi.org/ ON: DE92751077 [] NIFS-100 Other: ON: DE92751077; TRN: JP9111268 JPN; SCA: 700370; PA: JPN-91:011268; SN: 92000630684 2008-02-12 10109120