Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-26T00:36:40.559Z Has data issue: false hasContentIssue false
  • English
  • Français

Analytical model for gyro-phase drift arising from abrupt inhomogeneity

Published online by Cambridge University Press:  13 December 2013

Jeffrey J. Walker ,
M. E. Koepke ,
M. I. Zimmerman ,
W. M. Farrell  and
V. I. Demidov
Jeffrey J. Walker*
Affiliation:
Department of Physics, West Virginia Univeristy, Morgantown WV 26506, USA
M. E. Koepke
Affiliation:
Department of Physics, West Virginia Univeristy, Morgantown WV 26506, USA
M. I. Zimmerman
Affiliation:
Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt MD 20771, USA
W. M. Farrell
Affiliation:
Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt MD 20771, USA
V. I. Demidov
Affiliation:
Department of Physics, West Virginia Univeristy, Morgantown WV 26506, USA University ITMO, Kronverkskiy pr. 49, St. Petersburg 197101, Russia
*
†Email address for correspondence: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

If a magnetized-orbit-charged grain encounters any abrupt inhomogeneity in plasma conditions during a gyro-orbit, such that the resulting in-situ equilibrium charge is significantly different between these regions (q1/q2 ~ 2, where q1 is the in-situ equilibrium charge on one side of the inhomogeneity, q2 is the in-situ equilibrium charge on the other side, and q1 < q2 < 0), then the capacitive effects of charging and discharging of the dust grain can result in a modification to the orbit-averaged grain trajectory, i.e. gyro-phase drift. The special case of q1/q2 is notioned for the purpose of illustrating the utility of the method. An analytical expression is derived for the grain velocity, assuming a capacitor approximation to the OML charging model. For cases in which a strong electric field suddenly appears in the wake or at the space-plasma-to-crater interface from solar wind and/or ultraviolet illumination and in which a magnetic field permeates an asteroid, comet, or moon, this model could contribute to the interpretation of the distribution of fields and particles.

Type
Papers
Information
Journal of Plasma Physics , Volume 80 , Issue 3 , June 2014 , pp. 395 - 404
Copyright
Copyright © Cambridge University Press 2013 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Allen, J. E. 1992 Probe theory – the orbital motion approach. Phys. Scr. 45 (5), 497.Google Scholar
Colwell, Joshua E., Gulbis, Amanda A. S., Hornyi, M. and Robertson, S. 2005 Dust transport in photoelectron layers and the formation of dust ponds on eros. Icarus 175 (1), 159–169.CrossRefGoogle Scholar
Dove, A., Horanyi, M., Wang, X., Piquette, M., Poppe, A. R. and Robertson, S. 2012 Experimental study of a photoelectron sheath. Phys. Plasmas 19 (4), 043502.CrossRefGoogle Scholar
Goree, J. 1994 Charging of particles in a plasma. Plasma Sources Sci. Technol. 3 (3), 400.Google Scholar
Koepke, M. E., Walker, J. J., Zimmerman, M. I., Farrell, W. M. and Demidov, V. I. 2013 Signature of gyro-phase drift. J. Plasma Phys.CrossRefGoogle Scholar
Northrop, T. G. and Hill, J. R. 1983 The adiabatic motion of charged dust grains in rotating magnetospheres. J. Geophys. Res. Space Phys. 88 (A1), 1–11.Google Scholar
Rosenberg, M. and Mendis, D. A. 1995 Uv-induced Coulomb crystallization in a dusty gas. IEEE Trans. Plasma Sci. 23 (2), 177–179.Google Scholar
Sickafoose, A. A., Colwell, J. E., Horányi, M. and Robertson, S. 2000 Photoelectric charging of dust particles in vacuum. Phys. Rev. Lett. 84, 6034–6037.Google Scholar
Thomas, E., Merlino, R. L. and Rosenberg, M. 2012 Magnetized dusty plasmas: the next frontier for complex plasma research. Plasma Phys. Control. Fusion 54 (12), 124034.Google Scholar