Fig. 11
From: Development of space environment customized risk estimation for satellites (SECURES)
Example of stacked plots for the risk assessment of internal charging/ESD. From top to bottom: differential electron flux observed by Ch.3 (0.59–1.18 meV) of SDOM/Kodama, and differential electron flux estimated using the radiation belt model, current accumulated inside the target material (d2), and daily mean of current accumulated inside the target material (d2). The three dotted lines show the current levels of 0.1, 0.3, and 1.0 pA/cm2 in accordance with the ESD risk. The arrow shows the anomaly event of the ESA that occurred on April 2, 2003