Space radiation environment in low earth orbit during influences from solar and geomagnetic events in December 2006 |
| |
Authors: | H Koshiishi |
| |
Institution: | Japan Aerospace Exploration Agency, Tsukuba, Japan |
| |
Abstract: | In low earth orbit, the SAA region is the dominant contributor to both proton environment and electron environment from the standpoint of radiation dose for spacecraft lifetime. However, the polar region and the horn region are sometimes strongly disturbed due to large solar and geomagnetic events. During large disturbances, enhancements in proton flux are measured in the polar region, which gives temporary more severe space radiation environment than that given in the SAA region. On the other hand, enhancements in electron flux are measured mainly in the horn region corresponding to the outer radiation belt, which are likely sources of high-energy electrons in the inner radiation belt. These short-term disturbances have another radiation hazard to spacecraft such as single event and electrostatic discharge. |
| |
Keywords: | Space environment Space weather Radiation belt Low earth orbit |
本文献已被 ScienceDirect 等数据库收录! |
|