Pancake pitch angle distributions in warm ions observed with ISEE 1

Journal Article · Fri May 01 04:00:00 EDT 1981 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JA086iA05p03311· OSTI ID:6334530

Horwitz, J L; Baugher, C R; Chappell, C R; Shelley, E G; Young, D T

Observations of pancake (peak flux near 90 /sup 0/ pitch angle) distributions of low-energy (< or approx. =100 eV) ions are reported. Pancake distributions occur often in H/sup +/ and He/sup +/ simultaneously while O/sup +/ fluxes are either undetectable or field-aligned. The H/sup +/ and He/sup +/ pancake distributions typically display characteristic energies of the order of 10 eV and are frequently mixed with higher density, colder (kappaT< or approx. =3 eV), isotropic, quasi-Maxwellian components. They appear often within the outer regions of the plasmasphere, and seem to occur most frequently on the dayside and near the magnetic equator.

• Research Organization: Department of Physics, The University of Alabama in Huntsville, Huntsville, Alabama 35807
• OSTI ID: 6334530
• Journal Information: J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 86:A5; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
&amp; Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CATIONS
CHARGED PARTICLES
CHARGED-PARTICLE PRECIPITATION
EARTH ATMOSPHERE
ENERGY RANGE
EV RANGE
EV RANGE 10-100
GEOMAGNETIC EQUATOR
HELIUM IONS
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
INCLINATION
IONS
MAGNETOSPHERE
PLASMASPHERE