Accession Number ADA559386
Title Trapped Electron Model 2 (TEM-2).
Publication Date Apr 2010
Media Count 70p
Personal Author P. O'Brien T. B. Guild
Abstract We present a next-generation radiation specification for the electron radiation belts. The specification includes an empirical model of the statistical variation and spatiotemporal covariation of electron fluxes from 40 keV to 10 MeV in the inner and outer zones, as well as a dynamic full solar- cycle reanalysis, which provides a global snapshot of the electron fluxes every 6 hours from 1992 to 2008. The statistical model is derived from data taken by the S3-3, CRRES, Polar, and SCATHA spacecraft. The reanalysis is driven with data from HEO-l, HEO-3, ICO, and SAMPEX. We validate the reanalysis by comparing a test reanalysis without ICO data to actual ICO observations. The statistical model alone can demonstrate Monte Carlo characterization of uncertainties in radiation specifications for internal charging and total ionizing dose due to electrons. The reanalysis can demonstrate engineering applications, such as a 'standard solar cycle' for spacecraft design, as well as scientific applications, such as solar wind correlation studies, initial and boundary conditions for numerical simulations, and principal component analysis. We demonstrate application of the model to radiation specifications and to principal component analysis of the electron belts. Due to the prototype nature of the model, it is insufficiently accurate for definitive conclusions to quantitative investigations.
Keywords Accuracy
Belts
Boundaries
Correlation
Dynamics
Electron flux
Electron irradiation
Electrons
Engineering
Global
Internal
Ionizing radiation
Mathematical models
Models
Monte carlo method
Numerical analysis
Prototypes
Radiation
Radiation belts
Solar cycle
Solar wind
Space environment
Spacecraft
Specifications
Statistical analysis
Test and evaluation
Trapping(Charged particles)
Variations


 
Source Agency Non Paid ADAS
NTIS Subject Category 54C - Astrophysics
Corporate Author Aerospace Corp., El Segundo, CA.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1219
Contract Number FA8802-09-C-0001 NASA-NNG05GM22G

Science and Technology Highlights

See a sampling of the latest scientific, technical and engineering information from NTIS in the NTIS Technical Reports Newsletter

Acrobat Reader Mobile    Acrobat Reader