TITLE

Parametric coupling of low frequency whistler to Alfven wave in a plasma

AUTHOR(S)
Ahmad, Nafis; Tripathi, V. K.; Rafat, M.; Husain, Mudassir M.
PUB. DATE
December 2009
SOURCE
Physics of Plasmas;Dec2009, Vol. 16 Issue 12, p122301
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The parametric decay of a large amplitude electromagnetic wave in the ion cyclotron range of frequency into a compressional Alfven wave and an electromagnetic sideband wave in a magnetized plasma is investigated. The pump wave propagates in the direction of ambient magnetic field whereas the decay waves propagate at oblique angles. When the pump wave is left circularly polarized the decay is not permitted kinematically as the momentum of pump photon always exceeds the sum of momenta of the decay wave photons. For the right circularly polarized whistler mode pump the decay is permitted with sideband nearly right circularly polarized. The density perturbation associated with the Alfven wave couples with the pump driven oscillatory velocities of ions and electrons to produce a current driving the sideband. The sideband and the pump exert pondermotive force on ions and electrons that drive the Alfven wave. The frequency and growth rate of the Alfven wave increase with the normalized pump frequency. The threshold power density, determined by the collisional damping rates of the decay waves is rather modest.
ACCESSION #
47244181

 

Related Articles

  • Recent Results for Large Diameter (12 cm) Gas Puff Z-Pinches at Peak Currents of >3 to <6 MA. Coleman, P. L.; Krishnan, M.; Thompson, J. R.; Banister, J. W.; Failor, B. H.; Levine, J. S.; Qi, N.; Sze, H. M.; Apruzese, J. P.; Davis, J.; Thornhill, J. W.; Velikovich, A. L.; Commisso, R. J.; Verma, A. // AIP Conference Proceedings;2006, Vol. 808 Issue 1, p163 

    There is strong interest in many laboratories worldwide in utilizing less expensive, longer rise-time (> 200 ns) pulsed power to drive x-ray producing z-pinches. Based on the idea of a magnetically-driven annular implosion, the emission of K-shell photons requires high energy per ion (implosion...

  • Quantum Teleportation of an Einstein—Podolsy—Rosen Pair Using an Entangled Three-Particle State. Gorbachev, V. N.; Trubilko, A. I. // Journal of Experimental & Theoretical Physics;Nov2000, Vol. 91 Issue 5, p894 

    Quantum teleportation of an Einstein-Podolsky-Rosen pair using maximally entangled triplets to two receivers is studied. The projection basis for combined three-particle measurements, from the results of which the unknown state can be reconstructed, is found. The basis contains states where only...

  • Exotic charmonium hybrids at PANDA. Lundborg, Agnes // AIP Conference Proceedings;2004, Vol. 717 Issue 1, p431 

    Recent lattice-QCD calculations of the charmonium hybrid spectrum predict the ground state hybrid to be a spin-exotic with quantum number JPC = 1-+ at a mass of about 4.3 GeV/c². Such a low mass hybrid could be as narrow as O(20MeV/c²) due to dynamical suppression of decay into open charm....

  • Comments on ‘‘Plasma current drive by injection of photons with helicity’’ [Comm. Plasma Phys. Controlled Fusion 12, 165 (1989)]. Schalit, M. A.; Bellan, P. M. // Physics of Fluids B: Plasma Physics;Dec89, Vol. 1 Issue 12, p2533 

    Ohkawa has proposed a tokamak current-drive scheme [Comm. Plasma Phys. Controlled Fusion 12, 165 (1989)], which relies on the injection of circularly polarized magnetohydrodynamic waves. It is shown here that the favorable current-drive efficiency predicted by Ohkawa is not attained because...

  • Photoproduction and rescattering of polarized hyperons in deuterium. Nadel-Turoński, P.; Berman, B. L.; Ilieva, Y.; Ireland, D. G.; Tkabladze, A. // Few-Body Systems;Dec2008, Vol. 43 Issue 1-4, p227 

    Excited states of hadrons are essential for understanding confinement and non-perturbative QCD. Constituent quark models are successful in describing the first excited nucleon ( N *) states in each partial wave, but predict more states than have been observed experimentally. Diquark correlations...

  • Exclusive production of hadron pairs in two-photon interactions. Echenard, B. // European Physical Journal C -- Particles & Fields;Mar2004 Supplement 1, Vol. 33, ps566 

    The knowledge of two-photon processes increased during the last years thanks to the large sample of e+e- → e+e- hadrons events collected at LEP. Non perturbative QCD phenomena are investigated through the study of exclusive meson and baryon pair production. The cross sections are measured...

  • Jet production in two-photon collisions at LEP. Wengler, Thorsten // European Physical Journal C -- Particles & Fields;Mar2004 Supplement 1, Vol. 33, ps427 

    Jet and di-jet production are studied in collisions of quasi-real photons collected during the LEP2 program at e+e– center-of-mass energies from 189 to 209 GeV. OPAL reports good agreement of NLO perturbative QCD with the measured differential di-jet cross sections, which reach a mean...

  • Study of ultrarelativistic heavy-ion collisions in the PHENIX experiment. Ivanishchev, D. A.; Riabov, V. G.; Riabov, Yu. G. // Physics of Atomic Nuclei;Nov2009, Vol. 72 Issue 11, p1944 

    The latest physics results obtained in the PHENIX experiment by studying dAu, CuCu, and AuAu collisions at various interaction energies are reviewed. Attention is given primarily to the energy loss of hard-scattered partons and to the production of soft and high-transverse-momentum direct photons.

  • Prompt photons in photoproduction at HERA. Aaron, F.; Aldaya Martin, M.; Alexa, C.; Andreev, V.; Antunovic, B.; Backovic, S.; Baghdasaryan, A.; Barrelet, E.; Bartel, W.; Begzsuren, K.; Belousov, A.; Bizot, J.; Boudry, V.; Bozovic-Jelisavcic, I.; Bracinik, J.; Brandt, G.; Brinkmann, M.; Brisson, V.; Bruncko, D.; Bunyatyan, A. // European Physical Journal C -- Particles & Fields;Mar2010, Vol. 66 Issue 1/2, p17 

    The production of prompt photons is measured in the photoproduction regime of electron–proton scattering at HERA. The analysis is based on a data sample corresponding to a total integrated luminosity of 340 pb−1 collected by the H1 experiment. Cross sections are measured for photons...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics