TITLE

Anomalous transport of energetic particles in ITER relevant scenarios

AUTHOR(S)
Albergante, M.; Graves, J. P.; Fasoli, A.; Jenko, F.; Dannert, T.
PUB. DATE
November 2009
SOURCE
Physics of Plasmas;Nov2009, Vol. 16 Issue 11, p112301
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The anomalous transport of energetic ions in the presence of turbulent fields is investigated. Nonlinear simulations of a steady-state ITER [R. Aymar et al., Nucl. Fusion 41, 1301 (2001)] scenario have been carried out using the gyrokinetic turbulence code GENE [F. Jenko et al., Phys. Plasmas 7, 1904 (2000)], modeling the suprathermal particles as high temperature Maxwellian distributions in the passive tracer limit. Velocity space analysis shows that single particle diffusivities of ions above the critical energy are significantly larger than their neoclassical counterpart.
ACCESSION #
45515273

 

Related Articles

  • Gyrokinetic simulations of ion and impurity transport. Estrada-Mila, C.; Candy, J.; Waltz, R. E. // Physics of Plasmas;Feb2005, Vol. 12 Issue 2, p022305 

    A systematic study of turbulent particle and energy transport in both pure and multicomponent plasmas is presented. In this study, gyrokinetic results from the GYRO code [J. Candy and R. E. Waltz, J. Comput. Phys. 186, 545 (2003)] are supplemented with those from the GLF23 [R. E. Waltz, G. M....

  • Long global gyrokinetic simulations: Source terms and particle noise control. McMillan, B. F.; Jolliet, S.; Tran, T. M.; Villard, L.; Bottino, A.; Angelino, P. // Physics of Plasmas;May2008, Vol. 15 Issue 5, p052308 

    In global gyrokinetic simulations it takes a long time for the turbulence to reach a quasisteady state, and quantitative predictions about the quasisteady state turbulence have been difficult to obtain computationally. In particular, global particle-in-cell gyrokinetic simulations have been...

  • Stabilized radiation pressure dominated ion acceleration from surface modulated thin-foil targets. Chen, Min; Kumar, Naveen; Pukhov, Alexander; Yu, Tong-Pu // Physics of Plasmas;Jul2011, Vol. 18 Issue 7, p073106 

    The Rayleigh-Taylor instability in the radiation pressure dominated regime of ion acceleration is studied by means of multidimensional particle-in-cell simulations. It is shown that the growth of the long wavelength mode of the instability can be reduced by transverse diffusion of ions coming...

  • Materials Modification Under Ion Irradiation : JANNUS Project. Serruys, Y.; Ruault, M.-O.; Trocellier, P.; Henry, S.; Kaïtasov, O.; Trouslard, Ph. // AIP Conference Proceedings;2004, Vol. 740 Issue 1, p164 

    JANNUS (Joint Accelerators for Nano-Science and Nuclear Simulation) is a project designed to study the modification of materials using multiple ion beams and in-situ TEM observation. It will be a unique facility in Europe for the study of irradiation effects, the simulation of material damage...

  • Energisation of O+ and O+2 Ions at Mars: An Analysis of a 3-D Quasi-Neutral Hybrid Model Simulation. Kallio, E.; Fedorov, A.; Barabash, S.; Janhunen, P.; Koskinen, H.; Schmidt, W.; Lundin, R.; Gunell, H.; Holmström, M.; Futaana, Y.; Yamauchi, M.; Grigoriev, A.; Winningham, J.; Frahm, R.; Sharber, J. // Space Science Reviews;Jul2006, Vol. 126 Issue 1-4, p39 

    We have studied the loss of O+ and O+2 ions at Mars with a numerical model. In our quasi-neutral hybrid model ions (H+, He++, O+, O+2) are treated as particles while electrons form a massless charge-neutralising fluid. The employed model version does not include the Martian magnetic field...

  • Numerical simulation and optimization of multicomponent ion beam from RIKEN electron cyclotron resonance ion sources. Alexandrov, V.; Nakagawa, T.; Shevtsov, V.; Shirkov, G. // Review of Scientific Instruments;Feb2000, Vol. 71 Issue 2, p1094 

    Deals with a version of a program library for numerical simulation of ion beam transportation. Particle-in-cell method; Detailed beam space characteristics; Distribution function of particles; Special codes for multicomponent beams.

  • Kinetic Simulations of Ion Beam Neutralization. Wang, Joseph // AIP Conference Proceedings;5/21/2010, Vol. 1233 Issue 1, p282 

    Ion beam emission/neutralization is one of the most fundamental problems in spacecraft plasma interactions and electric propulsion. Although ion beam neutralization is readily achieved in experiments, the understanding of the underlying physical process remains at a rather primitive level. No...

  • Simulation of the effect of finely divided particles on turbulence. Zaichik, L. I.; Alipchenkov, V. M.; Kozlov, I. M. // High Temperature;Apr2010, Vol. 48 Issue 2, p205 

    A theoretical model is given for describing the inverse effect of small heavy particles on the intensity of turbulence in various flows. Analysis is performed of the effect of particles on isotropic homogeneous shear and wall turbulence.

  • Particle Clustering in Isotropic Turbulent Flow. Alipchenkov, V. M.; Zaichik, L. I. // Fluid Dynamics;May/Jun2003, Vol. 38 Issue 3, p417 

    A kinetic statistical model for describing the dispersion and clustering of heavy particles in homogeneous isotropic turbulence is presented. The model developed is used for calculating the relative velocities and the radial distribution function of a pair of particles in a steady suspension....

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics