Speaker
Dr
Serkan Golge
(Space Radiation Analysis Group, NASA Johnson Space Center, Houston, TX, USA)
Description
The Badhwar-O'Neill (BON) Galactic Cosmic Ray (GCR) flux model is used by NASA to certify microelectronic systems and in the analysis of radiation health risks for human space flight missions. Of special interest to NASA is the kinetic energy region below 4.0 GeV/n due to the fact that exposure from GCR behind shielding (e.g. inside a space vehicle) is heavily influenced by the GCR particles from this energy domain. The BON model numerically solves the Fokker-Planck differential equation to account for particle transport in the heliosphere due to diffusion, convection, and adiabatic deceleration under the assumption of a spherically symmetric heliosphere. The model utilizes a GCR measurements database from various particle detectors to determine the boundary conditions. By using an updated GCR database and improved model fit parameters, the new BON model (BON14) is significantly improved over the previous BON models for describing the GCR radiation environment of interest to human space flight.
| Registration number following "ICRC2015-I/" | 537 |
|---|---|
| Collaboration | -- not specified -- |
Primary author
Dr
Serkan Golge
(Space Radiation Analysis Group, NASA Johnson Space Center, Houston, TX, USA)
Co-authors
Dr
P. M. O'Neill
(NASA Johnson Space Center, Houston, TX, USA)
Dr
T. C. Slaba
(NASA Langley Research Center, Hampton, Virginia 23681, USA)
