Streaming instabilities of intense charged particle beams propagating along a solenoidal magnetic field in a background plasma

Startsev, Edward A.; Davidson, Ronald C.; Dorf, Mikhail
June 2008
Physics of Plasmas;Jun2008, Vol. 15 Issue 6, p062107
Academic Journal
Streaming instabilities of intense charged particle beams propagating along a solenoidal magnetic field in a background plasma are studied analytically and numerically. It is shown that the growth rate of the electromagnetic Weibel instability is modified by a relatively weak solenoidal magnetic field such that ωce>βbωpe, where ωce is the electron gyrofrequency, ωpe is the electron plasma frequency, and βb is the ion-beam velocity relative to the speed of light. Moreover, the Weibel instability is limited to very small propagation angles and long longitudinal wavelengths satisfying k∥2≲k⊥2 and c2k∥2≲ωpb2ωpi2/(ωpb2+ωpi2), where ωpb and ωpi are the plasma frequencies of the beam ions and the background plasma ions, respectively. For shorter longitudinal wavelengths, the electrostatic lower-hybrid instability becomes dominant. In this paper, the growth rates of various electrostatic beam-plasma instabilities and the electromagnetic Weibel instability are compared, and the space-time development of the modified two-stream instability is studied in detail and compared with numerical simulations.


Related Articles

  • Spatial mode structures of electrostatic drift waves in a collisional cylindrical helicon plasma. Schröder, Christiane; Grulke, Olaf; Klinger, Thomas; Naulin, Volker // Physics of Plasmas;Sep2004, Vol. 11 Issue 9, p4249 

    In a cylindrical helicon plasma, mode structures of coherent drift waves are studied in the poloidal plane, the plane perpendicular to the ambient magnetic field. The mode structures rotate with a constant angular velocity in the direction of the electron diamagnetic drift and show significant...

  • Stability of pure electron plasmas on magnetic surfaces. Boozer, Allen H. // Physics of Plasmas;Oct2004, Vol. 11 Issue 10, p4709 

    The electrostatic analog of magnetohydrodynamic stability for a pure electron plasma on magnetic surfaces is examined. Perturbations that conserve the number of particles and the entropy of the plasma as well as maintain force balance and a temperature that is a spatial constant along the...

  • Radial current density effects on rotating magnetic field current drive in field-reversed configurations. Clemente, R. A.; Gilli, M.; Farengo, R. // Physics of Plasmas;Oct2008, Vol. 15 Issue 10, p102503 

    Steady state solutions, suitable for field-reversed configurations (FRCs) sustained by rotating magnetic fields (RMFs) are obtained by properly including three-dimensional effects, in the limit of large FRC elongation, and the radial component of Ohm’s law. The steady electrostatic...

  • Electrostatic instability of electron beams in a planar E×B amplifier. Lee, Myoung-Jae; Lee, Hee J.; Chung, Kyu-Sun // Review of Scientific Instruments;Feb2008, Vol. 79 Issue 2, p02B502 

    A wave equation is kinetically derived for an electron beam to describe the linear electrostatic perturbations propagating in the perpendicular direction with respect to the applied magnetic field in a planar E×B amplifier in which the operating electric field is inhomogeneous. For...

  • Two-dimensional electrostatic simulations of plasma propagation perpendicular to a magnetic field. Galvez, Miguel; Barnes, Christopher // Physics of Fluids (00319171);Apr88, Vol. 31 Issue 4, p863 

    A two-dimensional electrostatic particle-in-cell code is used to simulate a finite-width plasma streaming across a uniform magnetic field. The simulations show that the plasma polarizes, and non-neutral charge layers develop along its edges. In an electron–ion plasma, the charge layers...

  • Potential formation due to plasma injection along converging magnetic field lines. Ishiguro, Seiji; Kishi, Yoshizo; Sato, Noriyoshi // Physics of Plasmas;Sep95, Vol. 2 Issue 9, p3271 

    Investigates potential formation in a high-speed plasma flow along converging magnetic mirror field lines, using a two-and-half-dimensional electrostatic particle simulation code. Formation of a large potential jump along the magnetic field lines, when a plasma flows into the converging...

  • Three-dimensional electrostatic particle-in-cell simulation with open boundaries applied to a plasma beam entering a curved magnetic field. Hurtig, Tomas; Brenning, Nils; Raadu, Michael A. // Physics of Plasmas;Nov2003, Vol. 10 Issue 11, p4291 

    Three-dimensional electrostatic particle-in-cell simulations of a laboratory experiment with an elongated plasma cloud entering a curved magnetic field are presented. A moving grid is used to follow the plasma motion from a region with longitudinal magnetic field, through a “transition...

  • Main parameters of a coaxial electrostatic lens. Ovsyannikova, L. P.; Fishkova, T. Ya. // Technical Physics;Dec97, Vol. 42 Issue 12, p1444 

    Coaxial electrostatic lenses are used in combination with a magnetic field in plasma-optical and manometric devices [A. I. Morozov and S. V. Lebedev, in Reviews of Plasma Physics, Vol. 8, M. A. Leontovich (ed.), Consultants Bureau, New York (1980); V. P. Afanas'ev, A. A. Vydrik, L. P....

  • Generation of wakefields by whistlers in spin quantum magnetoplasmas. Misra, A. P.; Brodin, G.; Marklund, M.; Shukla, P. K. // Physics of Plasmas;Dec2010, Vol. 17 Issue 12, p122306 

    The excitation of electrostatic wakefields in a magnetized spin quantum plasma by the classical and the spin-induced ponderomotive force (CPF and SPF, respectively) due to whistler waves is reported. The nonlinear dynamics of the whistlers and the wakefields is shown to be governed by a coupled...


Read the Article


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

Try another library?
Sign out of this library

Other Topics