The Space-Developed Dynamic Vertical Cutoff Rigidity Model and its Applicability to Aircraft Radiation Dose
Abstract
We have developed a dynamic geomagnetic vertical cutoff rigidity model that predicts the energetic charged particle transmission through the magnetosphere. Initially developed for space applications, we demonstrate. the applicability of this library of cutoff rigidity models for computing aircraft radiation dose. The world grids of vertical cutoff rigidities were obtained by particle trajectory tracing in a magnetospheric model. This reference set of world grids of vertical cutoff rigidities calculated for satellite altitudes covers all magnetic activity levels from super quiet to extremely disturbed (i.e., Kp indices ranging from 0 to 9+) for every three hours in universal time. We utilize the Mcllwain "L" parameter as the basis of the interpolation technique to reduce these initial satellite altitude vertical cutoff rigidities to cutoff rigidity values at aircraft altitudes.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 17, 2003
- Accession Number
- ADA423850
Entities
People
- D. F. Smart
- M. A. Shea
Organizations
- Air Force Research Laboratory