摘要
Natural space presents a complicated radiation environment containing various energetic particle types at different flux level and the flux of the particles is not constant modulating by solar activities[1]. On the other hand, the heavy ion flux applied in ground based single event test was commonly set at a fixed value. Refs. [2] and [3] both pointed out that the single event test result of harden device may exhibit flux dependency. It is necessary to fully study the ion flux dependency on single event effect.
