Nonlinear wake potential and stopping power for charged particles interacting with a one-dimensional electron gas

Zhang, Ya; Song, Yuan-Hong; Wang, You-Nian
November 2011
Physics of Plasmas;Nov2011, Vol. 18 Issue 11, p112705
Academic Journal
We examine the interaction of particles with a one-dimensional electron gas by employing the quantum hydrodynamic (QHD) theory, where the nonlinear wake potential and stopping power have been numerically calculated by solving the nonlinear QHD equations with flux corrected transport (FCT) numerical method. In our calculation, the nonlinear effects on the wake potential and stopping power are clearly observed and presented. In the moving coordinate, comparisons are made between the nonlinear and linear wake potentials, in which the maximum values are larger and more oscillations appear behind the projectile in a nonlinear case in contrast to that in a linear case. The nonlinear wake potentials show a clear dependence on time, that is, the FCT algorithm solves the nonlinear QHD equations by time integration starting from the initial time. It is shown that the nonlinear effects can enhance the wake potential and stopping power for particle velocities greater than a few Bohr velocities.


Related Articles

  • Spectroscopically determined potential energy surface of H[sub 2][SUP ARRANGE="STAGGER"]16]O up to 25 000 cm-1. Shirin, Sergei V.; Polyansky, Oleg L.; Zobov, Nikolai F.; Barletta, Paolo; Tennyson, Jonathan // Journal of Chemical Physics;2/1/2003, Vol. 118 Issue 5, p2124 

    A potential energy surface for the major isotopomer of water is constructed by fitting to observed vibration-rotation energy levels of the system using the exact kinetic energy operator nuclear motion program DVR3D. The starting point for the fit is the ab initio Born-Oppenheimer surface of...

  • Comment on the rate of isomerization of 3-phospholene. Zhao, Meishan; Rice, Stuart A. // Journal of Chemical Physics;2/15/1993, Vol. 98 Issue 4, p2837 

    We report calculations of the rate of isomerization of 3-phospholene based on the theory of Gray and Rice as extended by Zhao and Rice. This system is of interest for two reasons. First, the potential energy surface for motion in the isomerization coordinates is well known because of the...

  • Geminal functional theory: A synthesis of density and density matrix methods. Mazziotti, David A. // Journal of Chemical Physics;6/15/2000, Vol. 112 Issue 23 

    The energy of any atom or molecule with an even number N of electrons is shown to be an exact functional of a single geminal where the functionals for both the kinetic energy and the external potential are explicitly known. We derive the foundations for geminal functional theory (GFT) through a...

  • A Study of the Growth and Decay of Eddy Available Potential Energy and Eddy Kinetic Energy Based on Temporal Correlations. Lambert, Steven J. // Atmosphere -- Ocean (Canadian Meteorological & Oceanographic Soc;Mar1988, Vol. 26 Issue 1, p40 

    The growth and decay of vertically integrated eddy kinetic energy (KE) and eddy available potential energy (APE) are studied in terms of zonal wavenumber over a three-year period for the Northern and the Southern Hemispheres by correlating the energies and their tendencies with terms in the...

  • Ab initio ground potential energy surface ([sup 3]A[sup ″]) for the O([sup 3]P)+N[sub 2]O reaction and kinetics study. Gonza´lez, Miguel; Valero, Rosendo; Sayo´s, R. // Journal of Chemical Physics;8/8/2001, Vol. 115 Issue 6 

    An ab initio CASPT2//CASSCF study of the [sup 3]A[sup ″] ground potential energy surface for the O([sup 3]P)+N[sub 2]O(X [sup 1]Σ[sup +]) reaction has been performed, investigating the two predominant reactive channels. Symmetry breaking is reported for some of the structures. Rate...

  • A spectroscopically determined potential energy surface for the ground state of H216O: A new level of accuracy. Polyansky, Oleg L.; Jensen, Per; Tennyson, Jonathan // Journal of Chemical Physics;11/1/1994, Vol. 101 Issue 9, p7651 

    The potential energy function for the electronic ground state of the water molecule has been obtained by fitting rotation-vibration term values involving J≤14 for 24 vibrational states of H216O together with 25 additional vibrational term values belonging to higher excited states. The...

  • Stopping power for a charged particle moving through three-dimensional nonideal finite-temperature electron gases. Zhang, Ya; Song, Yuan-Hong; Wang, You-Nian // Physics of Plasmas;Jul2011, Vol. 18 Issue 7, p072701 

    We investigate the interaction of a charged particle with nonideal 3D electron gases by using the quantum hydrodynamic (QHD) theory. The stopping power for a nonideal electron gas at a finite-temperature has been theoretically analyzed and numerically calculated. In our calculation, the impact...

  • Plasmon excitation in metal slab by fast point charge: The role of additional boundary conditions in quantum hydrodynamic model. Ying-Ying Zhang; Sheng-Bai An; Yuan-Hong Song; Naijing Kang; Mišković, Z. L.; You-Nian Wang // Physics of Plasmas;2014, Vol. 21 Issue 10, p1 

    We study the wake effect in the induced potential and the stopping power due to plasmon excitation in a metal slab by a point charge moving inside the slab. Nonlocal effects in the response of the electron gas in the metal are described by a quantum hydrodynamic model, where the equation of...

  • Variational DVR Calculations. Barletta, P.; Lombardi, M.; Kievsky, A. // Few-Body Systems;Jan2004, Vol. 34 Issue 1/3, p11 

    Abstract. In the discrete variable representation (DVR) method the potential energy matrix V has a particular simple form. It is diagonal with values of the interaction potential at the discrete points. However, this simple form is obtained by making approximations in the calculation of the...


Read the Article


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

Try another library?
Sign out of this library

Other Topics