Journal article
On the perpendicular scale of electron phase-space holes
Geophysical research letters, Vol.27(2), pp.169-172
2000
DOI: 10.1029/1999GL010733
Abstract
The perpendicular scale of electron phase-space holes is investigated using electric field data from the Polar Plasma Wave Instrument. We show that the electron phase-space holes are roughly spherical for Ωe/ωp > 1, and become more oblate (with the perpendicular scale larger than the parallel scale) with decreasing Ωe/ωp. A scaling argument based upon electron gyrokinetic theory is proposed as a possible explanation for the observed scaling. The data indicate that the ratio of the parallel dimension (L∥) to the perpendicular dimension (L⟂) is such that L∥/L⟂ ≃ (1 + ρe²/λD²)−1/2. Our results provide a connection between the Geotail measurements in the deep magnetotail, where Ωe/ωp ≪ 1, and the FAST measurements in the low altitude auroral zone, where Ωe/ωp ≫ 1.
Details
- Title: Subtitle
- On the perpendicular scale of electron phase-space holes
- Creators
- J. R Franz - Cornell UniversityP. M Kintner - Cornell UniversityC. E Seyler - Cornell UniversityJ. S Pickett - University of IowaJ. D Scudder - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Geophysical research letters, Vol.27(2), pp.169-172
- DOI
- 10.1029/1999GL010733
- ISSN
- 0094-8276
- eISSN
- 1944-8007
- Publisher
- American Geophysical Union
- Language
- English
- Date published
- 2000
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199808002771
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