New instrument enhances understanding of Van Allen radiation belts

A new instrument called REPTile-2 is enhancing our understanding of the Van Allen radiation belts, which contain energetic particles that can harm space missions. It operates in a highly inclined orbit, minimizing interference from protons. Launched in April 2023, REPTile-2 uses advanced technologies like guard rings and Pulse Height Analysis to provide high-resolution measurements of electrons. This has led to the discovery of a temporary third radiation belt formed during a major magnetic storm in May 2024. The data from REPTile-2 offers unprecedented insights into the behavior of radiation belt electrons, revealing intricate patterns and a wide range of energy levels. Scientists are analyzing this information to learn more about the new belt's characteristics and duration.