Accession Number : AD0750861

Title :   Radial Diffusion of Ionized Helium and Protons: A Probe for Magnetospheric Dynamics.

Descriptive Note : Research rept. Jun 70-Jan 72,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Cornwall,John M.

Report Date : 15 SEP 1972

Pagination or Media Count : 56

Abstract : The comparison of radial diffusion of magnetospheric helium ions and protons is a sensitive test of the diffusion process assumed (magnetic or electrostatic fluctuations) and thus valuable as a probe of magnetospheric dynamics for protons, electrons, and heavy ions, as well as for the helium ions themselves. In the paper, radial profiles of ionized helium flux and protons were calculated, taking into account certain physical effects ignored in previous treatments. These include: (1) charge exchange processes (He(++) yields He(+) yields He or He(++)) which provide a loss mechanism as well as a way of converting solar wind alpha particles to He(+); (2) contribution of fluctuating electrostatic fields to the radial diffusion coefficient. (Author)

Descriptors :   (*MAGNETOSPHERE, PARTICLE TRAJECTORIES), SOLAR WIND, HELIUM, IONS, PROTONS, ALPHA PARTICLES, DIFFUSION, ELECTROSTATIC FIELDS

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE