Theoretical studies on plasma heating and confinement

Technical Report · Fri Jan 01 00:00:00 EST 1993

DOI:https://doi.org/10.2172/7012555· OSTI ID:7012555

Sudan, R N

Three principal topics are covered in this final report: Stabilization of low frequency modes of an axisymmetric compact torus plasma confinement system, such as, spheromaks and FRC'S, by a population of large orbit axis encircling energetic ions. Employing an extension of the energy principle' which utilizes a Vlasov description for the energetic 'ion component, it has been demonstrated that short wavelength MHD type modes are stabilized while the long wavelength tilt and precessional modes are marginally stable. The deformation of the equilibrium configuration by the energetic ions results in the stabilization of the tilt mode for spheromaks. Formation of Ion Rings and their coalescence with spheromaks. A two dimensional electromagnetic PIC codes has been developed for the study of ion ring formation and its propagation, deformation and slowing down in a cold plasma. It has been shown that a ring moving at a speed less than the Alfven velocity can merge with a stationary spheromak. Anomalous transport from drift waves in a Tokomak. The Direct Interaction Approximation in used to obtain incremental transport coefficients for particles and heat for drift waves in a Tokomak. It is shown that the transport matrix does not obey Onsager's principle.

• Research Organization: Cornell Univ., Ithaca, NY (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-84ER53174
• OSTI ID: 7012555
• Report Number(s): DOE/ER/53174-T1; ON: DE93007617
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA CONFINEMENT
RESEARCH PROGRAMS
MHD EQUILIBRIUM
PLASMA HEATING
PLASMA INSTABILITY
PLASMA SIMULATION
PROGRESS REPORT
SPHEROMAK DEVICES
TOKAMAK DEVICES
TRANSPORT THEORY
TURBULENCE
CLOSED PLASMA DEVICES
CONFINEMENT
DOCUMENT TYPES
EQUILIBRIUM
HEATING
INSTABILITY
SIMULATION
THERMONUCLEAR DEVICES
700310* - Plasma Confinement- (1992-)
700330 - Plasma Kinetics
Transport
& Impurities- (1992-)