The Influence of the Magnetic Field Topology on Hall Thruster Performance

2006 ◽  
Author(s):  
Oleg Gorshkov ◽  
Andrey Shagayda ◽  
Sergey Irishkov
Keyword(s):  
Magnetic Field ◽  
Hall Thruster ◽  
Magnetic Field Topology ◽  
The Magnetic Field

Influence of the Magnetic Field Topology on Hall Thruster Discharge Channel Wall Erosion

2012 ◽  
Vol 22 (3) ◽  
pp. 4904105-4904105 ◽  
Author(s):  
Chang Liu ◽  
Zuo Gu ◽  
Kan Xie ◽  
Yunkui Sun ◽  
Haibin Tang
Keyword(s):  
Magnetic Field ◽  
Channel Wall ◽  
Discharge Channel ◽  
Hall Thruster ◽  
Magnetic Field Topology ◽  
The Magnetic Field

scholarly journals PERIODIC RADIO EMISSION FROM THE M7 DWARF 2MASS J13142039+1320011: IMPLICATIONS FOR THE MAGNETIC FIELD TOPOLOGY

2011 ◽  
Vol 741 (1) ◽  
pp. 27 ◽  
Author(s):  
M. McLean ◽  
E. Berger ◽  
J. Irwin ◽  
J. Forbrich ◽  
A. Reiners
Keyword(s):  
Magnetic Field ◽  
Radio Emission ◽  
Magnetic Field Topology ◽  
The Magnetic Field

scholarly journals On the magnetic field topology in reconnection region

2018 ◽  
Vol 1100 ◽  
pp. 012007
Author(s):  
G Consolini ◽  
V Quattrociocchi ◽  
M F Marcucci
Keyword(s):  
Magnetic Field ◽  
Magnetic Field Topology ◽  
Reconnection Region ◽  
The Magnetic Field

scholarly journals On the stability of a general magnetic field topology in stellar radiative zones

2019 ◽  
Vol 82 ◽  
pp. 365-371
Author(s):  
K. Augustson ◽  
S. Mathis ◽  
A. Strugarek
Keyword(s):  
Magnetic Field ◽  
Global Change ◽  
Magnetic Fields ◽  
Potential Energy ◽  
Massive Stars ◽  
Spherical Geometry ◽  
Stable Region ◽  
Magnetic Field Topology ◽  
The Stability ◽  
The Magnetic Field

This paper provides a brief overview of the formation of stellar fossil magnetic fields and what potential instabilities may occur given certain configurations of the magnetic field. One such instability is the purely magnetic Tayler instability, which can occur for poloidal, toroidal, and mixed poloidal-toroidal axisymmetric magnetic field configurations. However, most of the magnetic field configurations observed at the surface of massive stars are non-axisymmetric. Thus, extending earlier studies in spherical geometry, we introduce a formulation for the global change in the potential energy contained in a convectively-stable region for both axisymmetric and non-axisymmetric magnetic fields.

scholarly journals Magnetic field line braiding in the solar atmosphere

2016 ◽  
Vol 12 (S327) ◽  
pp. 77-81
Author(s):  
S. Candelaresi ◽  
D. I. Pontin ◽  
G. Hornig
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Solar Corona ◽  
Field Line ◽  
Solar Atmosphere ◽  
Magnetic Field Line ◽  
Solar Magnetic Field ◽  
Near Surface ◽  
Magnetic Field Topology ◽  
The Magnetic Field

AbstractUsing a magnetic carpet as model for the near surface solar magnetic field we study its effects on the propagation of energy injectected by photospheric footpoint motions. Such a magnetic carpet structure is topologically highly non-trivial and with its magnetic nulls exhibits qualitatively different behavior than simpler magnetic fields. We show that the presence of magnetic fields connecting back to the photosphere inhibits the propagation of energy into higher layers of the solar atmosphere, like the solar corona. By applying certain types of footpoint motions the magnetic field topology is is greatly reduced through magnetic field reconnection which facilitates the propagation of energy and disturbances from the photosphere.

scholarly journals Side-conditioned axisymmetric equilibria with incompressible flows

2008 ◽  
Vol 74 (3) ◽  
pp. 327-344 ◽  
Author(s):  
G. N. THROUMOULOPOULOS ◽  
H. TASSO ◽  
G. POULIPOULIS
Keyword(s):  
Magnetic Field ◽  
Incompressible Flows ◽  
Plasma Temperature ◽  
Magnetic Axis ◽  
Toroidal Shell ◽  
Initial Value ◽  
Magnetic Field Topology ◽  
Equilibrium Configurations ◽  
Magnetic Surfaces ◽  
The Magnetic Field

AbstractAxisymmetric equilibria with incompressible flows of arbitrary direction are studied in the framework of magnetohydrodynamics under a variety of physically relevant side conditions consisting, for example, in that the plasma temperature or the magnetic field modulus are uniform on magnetic surfaces. To this end a set of pertinent nonlinear ordinary differential equations (ODEs) are transformed to quasilinear ODEs and the respective initial value problem is solved numerically with appropriately determined initial values near the magnetic axis. Several equilibrium configurations are then constructed surface by surface. It turns out that in addition to the usual configurations with a magnetic axis, the non-field aligned flow results to novel toroidal shell equilibria in which the plasma is confined within a couple of magnetic surfaces. In addition, the flow affects the elongation and triangularity of the magnetic surfaces and opens up the possibility of changing the magnetic field topology by creating double toroidal shell-like configurations.

scholarly journals The magnetic field topology of the weak-lined T Tauri star V410 Tauri

2012 ◽  
Vol 548 ◽  
pp. A95 ◽  
Author(s):  
T. A. Carroll ◽  
K. G. Strassmeier ◽  
J. B. Rice ◽  
A. Künstler
Keyword(s):  
Magnetic Field ◽  
Tauri Star ◽  
Magnetic Field Topology ◽  
T Tauri ◽  
The Magnetic Field

scholarly journals Experimental Verification of the Magnetic Field Topography inside a small Hall Thruster

2021 ◽  
Vol 21 (5) ◽  
pp. 150-157
Author(s):  
Maciej Jakubczak ◽  
Jacek Kurzyna ◽  
Arsenii Riazantsev
Keyword(s):  
Magnetic Field ◽  
Magnetic Circuit ◽  
Hall Thruster ◽  
Detailed Knowledge ◽  
Hall Thrusters ◽  
Robust Method ◽  
Actual Distribution ◽  
Hall Sensors ◽  
The Magnetic Field ◽  
Good Agreement

Abstract The magnetic circuit of a 500 W class Hall thruster, an electric propulsive device for spacecraft, was characterized experimentally and the results compared with simulation in order to verify the design. The commercial 3D gaussmeter, which was used in this work, was additionally recalibrated to compensate for translation and rotation of individual Hall sensors inside the probe. The Stokes stream function approach was applied to reconstruct the magnetic field topography in the thruster. The procedure, carried out on four different cases, yielded very good agreement between simulations and measurements, even for cusped configurations. Presented technique could be used as a robust method of verification of new magnetic circuit designs not only for Hall thrusters but also for a wide class of plasma devices for which detailed knowledge about actual distribution of magnetic field is crucial for optimization.

Sign in / Sign up

Export Citation Format

Share Document