TITLE

A design approach for improving the performance of single-grid planar retarding potential analyzers

AUTHOR(S)
Davidson, R. L.; Earle, G. D.
PUB. DATE
January 2011
SOURCE
Physics of Plasmas;Jan2011, Vol. 18 Issue 1, p012905
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Planar retarding potential analyzers (RPAs) have a long flight history and have been included on numerous spaceflight missions including Dynamics Explorer, the Defense Meteorological Satellite Program, and the Communications/Navigation Outage Forecast System. RPAs allow for simultaneous measurement of plasma composition, density, temperature, and the component of the velocity vector normal to the aperture plane. Internal conductive grids are used to approximate ideal potential planes within the instrument, but these grids introduce perturbations to the potential map inside the RPA and cause errors in the measurement of the parameters listed above. A numerical technique is presented herein for minimizing these grid errors for a specific mission by varying the depth and spacing of the grid wires. The example mission selected concentrates on plasma dynamics near the sunset terminator in the equatorial region. The international reference ionosphere model is used to discern the average conditions expected for this mission, and a numerical model of the grid-particle interaction is used to choose a grid design that will best fulfill the mission goals.
ACCESSION #
57679415

 

Related Articles

  • Interaction of a shear Alfvén wave with a filamentary density perturbation in a low-β plasma. Drozdenko, T.; Morales, G. J. // Physics of Plasmas;Mar2000, Vol. 7 Issue 3 

    This analytic study investigates the interaction between a large-scale shear Alfvén wave propagating through a low-β plasma and a pre-existing density perturbation of small transverse scale. The interaction forms an in situ antenna that self-consistently generates two field-aligned current...

  • Stationary Equilibria of Self-Gravitating Dusty Plasmas. Verheest, Frank; Cadez, Vladimir M. // AIP Conference Proceedings;2002, Vol. 649 Issue 1, p251 

    Plasma and dust are key ingredients of our universe, prompting a revision of stationary equilibria of self-gravitating dusty plasmas. We review plane-parallel and spherically symmetric stationary configurations without flows. Indications about possible perturbations connect the inhomogeneity and...

  • Kink instability in electron magnetohydrodynamics. Jain, Neeraj; Das, Amita; Kaw, Predhiman // Physics of Plasmas;Sep2004, Vol. 11 Issue 9, p4390 

    The paper presents a complete three-dimensional linearized perturbation analysis for a sheared electron flow configuration in the electron magnetohydrodynamic limit. It is shown that the instability criterion in this case is much more relaxed than those of two-dimensional (azimuthally symmetric)...

  • Energy Levels of the 6p3/2ns, nd, ng Autoionizing Series of Pb I. ZHOU, Chao; LIANG, Liang; ZHANG, Ling // Turkish Journal of Physics;2009, Vol. 33 Issue 1, p31 

    Based on the weakest bound electron potential model (WBEPM) theory, six energy levels of the autoionizing Rydberg series 6pns 3/2[3/2]1 (n = 15-25), 6pns 3/2[3/2]2 (n = 15-25), 6pnd 3/2[3/2]1 (n = 13-25), 6pnd 3/2[5/2]3 (n = 13-25), 6pnd 3/2[7/2]3 (n = 14-25) and 6png 3/2[5/2]2(n = 5-25) of Pb I...

  • Wake potentials and impedances of charged beams in gradually tapering structures. Burton, D. A.; Christie, D. C.; Smith, J. D. A.; Tucker, R. W. // Journal of Mathematical Physics;Mar2011, Vol. 52 Issue 3, p032902 

    We develop an analytical method for calculating the geometric wakefield and impedances of an ultrarelativistic beam propagating on- and off-axis through an axially symmetric geometry with slowly varying circular cross-section, such as a transition. Unlike previous analytical methods, our...

  • Comparing ab initio density-functional and wave function theories: The impact of correlation on the electronic density and the role of the correlation potential. Grabowski, Ireneusz; Teale, Andrew M.; Smiga, Szymon; Bartlett, Rodney J. // Journal of Chemical Physics;9/20/2011, Vol. 135 Issue 11, p114111 

    The framework of ab initio density-functional theory (DFT) has been introduced as a way to provide a seamless connection between the Kohn-Sham (KS) formulation of DFT and wave-function based ab initio approaches [R. J. Bartlett, I. Grabowski, S. Hirata, and S. Ivanov, J. Chem. Phys. 122, 034104...

  • Communication: Extended multi-state complete active space second-order perturbation theory: Energy and nuclear gradients. Shiozaki, Toru; Győrffy, Werner; Celani, Paolo; Werner, Hans-Joachim // Journal of Chemical Physics;8/28/2011, Vol. 135 Issue 8, p081106 

    The extended multireference quasi-degenerate perturbation theory, proposed by Granovsky [J. Chem. Phys. 134, 214113 (2011)], is combined with internally contracted multi-state complete active space second-order perturbation theory (XMS-CASPT2). The first-order wavefunction is expanded in terms...

  • Spin-orbit coupling in the ground and low-lying excited states of HF and HF. Wu, X. G.; Wan, M. J.; Song, C. Q.; Gao, T. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Nov2010, Vol. 60 Issue 2, p263 

    Electronic structure and spectroscopic properties B, ω, ω x, α, T of ground state and the low-lying excited states of HF and HF molecular ions were investigated within scalar relativistic multireference configuration interaction with single and double excitations framework using the...

  • The heavy quark potential and its mass dependence. Laschka, A.; Kaiser, N.; Weise, W. // AIP Conference Proceedings;5/23/2011, Vol. 1343 Issue 1, p370 

    The heavy quark-antiquark potential is an important topic in QCD that involves perturbative as well as non-perturbative methods. We construct the perturbative short-distance part of the potential in coordinate space via a subtracted Fourier transform, covering the momentum region where...

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