# Self-Consistent Neutral Point Current and Fields from Single Particle Dynamics

- T. E. Moore,
- J. H. Waite Jr.,
- T. W. Moorehead and
- W. B. Hanson

Published Online: 18 MAR 2013

DOI: 10.1029/GM044p0055

Copyright 1988 by the American Geophysical Union

Book Title

## Modeling Magnetospheric Plasma

Additional Information

#### How to Cite

Martin, R. F. (1988) Self-Consistent Neutral Point Current and Fields from Single Particle Dynamics, in Modeling Magnetospheric Plasma (eds T. E. Moore, J. H. Waite, T. W. Moorehead and W. B. Hanson), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM044p0055

#### Publication History

- Published Online: 18 MAR 2013
- Published Print: 1 JAN 1988

#### Book Series:

#### ISBN Information

Print ISBN: 9780875900704

Online ISBN: 9781118664414

- Summary
- Chapter
- References

### Keywords:

- Space plasmas—Mathematical models;
- Magnetosphere—Mathematical models;
- Ionosphere—Mathematical models

### Summary

In order to begin to build a global model of the magnetotail-auroral region interaction, it is of interest to understand the role of neutral points as potential centers of particle energization in the tail. In this paper, the single particle current is calculated near a magnetic neutral point with magnetotail properties. This is balanced with the Ampere's law current producing the magnetic field to obtain the self-consistent electric field for the problem. Also calculated is the current-electric field relationship and, in the regime where this relation is linear, an effective conductivity. Results for these macroscopic quantities are surprisingly similar to the values calculated for a constant normal field current sheet geometry. Application to magnetotail modeling is discussed.