Calculation of a realistic gradient as a function of radial distance from the sunNumerical calculations of radial gradients of galactic cosmic ray protons have been performed for a model of the interplanetary cavity which includes processes of diffusion along the spiral interplanetary magnetic field lines, convection, and adiabatic energy change. The increasing spiral nature of the field lines with increasing distance from the sun results in the bulk of the modulation region being beyond the earth. The radial gradients for this model are found to be small near the earth and out to a few AU, increasing as one approaches the boundary.
Document ID
19740047451
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Lezniak, J. A.
Webber, W. R. (New Hampshire, University Durham, N.H., United States)