Theory of fine-scale zonal flow generation from trapped electron mode turbulence

Lu Wang; Hahm, T. S.
August 2009
Physics of Plasmas;Aug2009, Vol. 16 Issue 8, p082302
Academic Journal
Most existing zonal flow generation theory has been developed with a usual assumption of qrρθi<1 (qr is the radial wave number of zonal flow and ρθi is the ion poloidal gyroradius). However, recent nonlinear gyrokinetic simulations of trapped electron mode turbulence exhibit a relatively short radial scale of the zonal flows with qrρθi∼1 [Z. Lin et al., Proceedings of the 21st International Conference on Plasma Physics and Controlled Nuclear Fusion Research, Chengdu, China, 2006 (International Atomic Energy Agency, Vienna, 2006); D. Ernst et al., Phys. Plasmas 16, 055906 (2009)]. This work reports an extension of zonal flow growth calculation to this short wavelength regime via the wave kinetics approach. A generalized expression for the polarization shielding for arbitrary radial wavelength [L. Wang and T. S. Hahm, Phys. Plasmas 16, 062309 (2009)] which extends the Rosenbluth–Hinton formula in the long wavelength limit is applied.


Related Articles

  • Excitation functions for complete-fusion and transfer reactions in 4He interaction with 197Au nuclei. Kulko, A. A.; Demekhina, N. A.; Kalpakchieva, R.; Muzychka, Yu. A.; Penionzhkevich, Yu. E.; Rassadov, D. N.; Skobelev, N. K.; Testov, D. A. // Physics of Atomic Nuclei;Apr2007, Vol. 70 Issue 4, p613 

    Excitation functions are measured for the fusion reactions 197Au(4He, xn)201− xn Tl that are induced by alpha-particle interaction with gold nuclei in the energy range 14–36 MeV and in which x neutrons (0 ≤ x ≤ 3) are evaporated. The stack-activation technique was used...

  • One flerovium atom at a time. Schwerdtfeger, Peter // Nature Chemistry;Jul2013, Vol. 5 Issue 7, p636 

    The article reports that the last primordial element in the periodic table with a lifetime comparable to the age of the Earth is plutonium. Four isotopes of element 114, with atomic numbers from 286 to 289, have been produced at a heavy-ion cyclotron from nuclear fusion reactions. The atomic...

  • State selective electron capture in partially stripped ion-atom interaction at intermediate and high energies. Sounda, S.; Dhara, A.; Purkait, M.; Mandal, C. R. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;May2006, Vol. 38 Issue 2, p257 

    Post form of “boundary corrected continuum intermediate state (BCIS)” approximation has been employed to study charge transfer cross-sections in collision of Cq+, Nq+ and Oq+ (q=1–5) with ground state atomic hydrogen in the energy range of 50–200 keV/amu. In this...

  • Acoustic charge transport in a n-i-n three terminal device. De Simoni, Giorgio; Cecchini, Marco; Piazza, Vincenzo; Beltram, Fabio; Beere, H. E.; Ritchie, D. A. // AIP Conference Proceedings;2007, Vol. 893 Issue 1, p691 

    We present a novel scheme for acoustic-charge-transport devices based on a n-i-n lateral junction as electron injector and show that surface acoustic waves are able to pick up electrons from a current flowing through the junction and drive them towards an Ohmic output contact. The main advantage...

  • Radiative and non-radiative electron capture from carbon atoms by relativistic helium ions. Gójska, A.; Chmielewska, D.; Rymuza, P.; Rzadkiewicz, J.; Sujkowski, Z.; Adachi, T.; Fujita, H.; Fujita, Y.; Shimbara, Y.; Hara, K.; Shimizu, Y.; Yoshida, H. P.; Haruyama, Y.; Kamiya, J.; Ogawa, H.; Saito, M.; Tanaka, M. // European Physical Journal A -- Hadrons & Nuclei;Apr2006 Supplement, Vol. 27, p181 

    Interaction of radiation with helium atoms and/or ions is of interest in various astrophysical applications. The reverse reactions of fast 150MeV/amu 3He++ ions with solid C targets have been studied at the isochronous cyclotron of the RCNP in Osaka. The singly ionized helium ions resulting from...

  • Vibronic Spectra of Mixed Frenkel and Charge-Transfer Excitons. Lalov, I. J.; Zhelyazkov, I. // AIP Conference Proceedings;2007, Vol. 899 Issue 1, p57 

    The excitonic and vibronic spectra of a molecular chain and of crystal of MePTCDI are studied in the case when: (i) a Frenkel exciton (FE) and charge transfer excitons (CTEs) mix strongly; (ii) two mechanisms of coupling between these mixed excitons and intramolecular vibrations, notably linear...

  • Total reaction and fusion cross sections at sub- and near-barrier energies for the system 7Li + 28Si. Pakou, A.; Rusek, K.; Alamanos, N.; Aslanoglou, X.; Kokkoris, M.; Lagoyannis, A.; Mertzimekis, T. J.; Musumarra, A.; Nicolis, N. G.; Pierroutsakou, D.; Roubos, D. // European Physical Journal A -- Hadrons & Nuclei;Feb2009, Vol. 39 Issue 2, p187 

    Fusion cross sections are extracted for the 7Li$ + $28Si system, via reaction cross section and transfer measurements at sub- and near-barrier energies ( Elab = 5.7 to 14MeV). The energy evolution of transfer to reaction cross section ratios is determined with the aid of CDCC calculations, which...

  • Role of neutrons in the fusion of nuclei. Zagrebaev, V. I.; Samarin, V. V. // Physics of Atomic Nuclei;Jun2007, Vol. 70 Issue 6, p1003 

    The problem of a quantum-mechanical description of a near-barrier fusion of heavy nuclei under conditions of a strong coupling of their relative motion to neutron degrees of freedom is studied. New mutually complementing efficient models employing the multidimensional time-dependent...

  • Direct Reactions of Borromean Nuclei. Shimoura, S. // AIP Conference Proceedings;4/29/2008, Vol. 1011 Issue 1, p293 

    There are so-called Borromean nuclei on the drip-line in the nuclear chart, where any two-body subsystem has no bound state. The exotic structure and responses of Borromean nuclei have been studied by measurements of three-body (final-state) channels produced via direct reactions. Measurement of...


Read the Article


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

Try another library?
Sign out of this library

Other Topics