TITLE

Nonlinear electron-acoustic waves in quantum plasma

AUTHOR(S)
Sah, O. P.; Manta, J.
PUB. DATE
March 2009
SOURCE
Physics of Plasmas;Mar2009, Vol. 16 Issue 3, p032304
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The nonlinear wave structure of electron-acoustic waves (EAWs) is investigated in a three component unmagnetized dense quantum plasma consisting of two distinct groups of electrons (one inertial cold electron, and other inertialess hot electrons) and immobile ions. By employing one dimensional quantum hydrodynamic model and standard reductive perturbation technique, a Korteweg–de-Vries equation governing the dynamics of EAWs is derived. Both compressive and rarefactive solitons along with periodical potential structures are found to exist for various ranges of dimensionless quantum parameter H. The quantum mechanical effects are also examined numerically on the profiles of the amplitude and the width of electron-acoustic solitary waves. It is observed that both the amplitude and the width of electron-acoustic solitary waves are significantly affected by the parameter H. The relevance of the present investigation to the astrophysical ultradense plasmas is also discussed.
ACCESSION #
37258883

 

Related Articles

  • Some size-dependent electronic properties in charged MgO clusters. Coudray, C.; Blaise, G. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Nov2003, Vol. 27 Issue 2, p115 

    Starting from two cubic pieces of a MgO crystal ((3 x 3 x 3) and (5 x 5 x 5)), both containing a central oxygen atom, two clusters are simulated with the help of a DFT-LDA method. These clusters are charged in order to be equivalent to pieces of a neutral crystal. In each cluster, a neutral...

  • Interelectronic angle densities of atoms in momentum space. Koga, Toshikatsu // Theoretical Chemistry Accounts: Theory, Computation, & Modeling;Sep2003, Vol. 110 Issue 2, p79 

    For the 102 atoms from He to Lr in their ground states, the Hartree–Fock interelectronic angle densities,A(θ12), in momentum space are reported, where θ12 is the angle between the momentum vectorsp1 and p2 of two electrons. In the first three atoms, He–Be, A(θ12) is found...

  • The strength of the σ-, Ï€- and δ-bonds in Re2Cl. Krapp, Andreas; Lein, Matthias; Frenking, Gernot // Theoretical Chemistry Accounts: Theory, Computation, & Modeling;Jun2008, Vol. 120 Issue 1-3, p313 

    The geometry of Re2Cl has been optimized for the eclipsed ( D 4 h ) equilibrium conformation and for the staggered ( D 4 d ) conformation at BP86/TZ2P. The nature of the Re–Re bond which has a formal bond order four has been studied with an energy decomposition analysis (EDA). The EDA...

  • Potential hill electron-acoustic solitons and double layers in plasmas with two electron species. Cattaert, Tom; Verheest, Frank; Hellberg, Manfred A. // Physics of Plasmas;Apr2005, Vol. 12 Issue 4, p042901 

    In the description of (high-frequency) electron-acoustic solitons in a plasma consisting of positive ions, cool electrons, and hot electrons, the dynamics of the ions plays no essential role and can be eliminated from the treatment, the ions merely providing a constant positive background. It is...

  • Temporal optimization of neutron generation from the exploding deuterated methane jet of clusters subjected to an intense laser pulse. Haiyang Lu; Jiansheng Liu; Cheng Wang; Wentao Wang; Zili Zhou; Aihua Deng; Changquan Xia; Yi Xu; Yuxin Leng; Guoquan Ni; Ruxin Li; Zhizhan Xu // Physics of Plasmas;Aug2009, Vol. 16 Issue 8, p083107 

    An experimental investigation on the interaction of an ultraintense femtosecond laser pulse at the intensity of 2×1017 W/cm2 (60 fs, 120 mJ at 800 nm) with clusters in a supersonic jet of deuterated methane gas has shown the generation of energetic deuterons and nuclear fusion events. The...

  • Tractable spin-pure methods for bond breaking: Local many-electron spin-vector sets and an approximate valence bond model. Small, David W.; Head-Gordon, Martin // Journal of Chemical Physics;2/28/2009, Vol. 130 Issue 8, pN.PAG 

    For a given number of electrons, total spin, and matching spin z-component, we construct a set that spans the many-electron spin subspace associated with these spin values. Each vector in the set is tensorially related to spin-pure vectors of six electrons or less. We show that in the limit of...

  • The energetics of large Lennard-Jones clusters: transition to the hexagonal close-packed structure. Krainyukova, N. V. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Jul2007, Vol. 43 Issue 1-3, p45 

    The energetics of large multiply twined particles (MTPs) such as decahedra with fivefold symmetry, face-centred cubic (fcc) and hexagonal close-packed (hcp) clusters in size from 2000 to ~45000 atoms was numerically analysed. Clusters were relaxed freely under the Lennard-Jones pair potential to...

  • Electron-electron bremsstrahlung for bound target electrons. Hauga, E. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Feb2009, Vol. 49 Issue 2, p193 

    For the process of electron-electron (e-e) bremsstrahlung the momentum and energy distributions of the recoiling electrons are calculated in the laboratory frame. In order to get the differential cross section and the photon spectrum for target electrons which are bound to an atom, these...

  • Results of the SINGAP Neutral Beam Accelerator Experiment at JAEA. de Esch, H. P. L.; Svensson, L.; Inoue, T.; Taniguchi, M.; Umeda, N.; Kashiwagi, M.; Fubiani, G. // AIP Conference Proceedings;3/12/2009, Vol. 1097 Issue 1, p353 

    IRFM (CEA Cadarache) and JAEA Naka have entered into a collaboration in order to test a SINGAP [1] accelerator at the JAEA Megavolt Test Facility (MTF) at Naka, Japan. Whereas at the CEA testbed the acceleration current was limited to 0.1 A, at JAEA 0.5 A is available. This allows the...

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