Abundance variations during a series of 3He-rich events observed by Solar Orbiter

On October 27 to 30, 2022, the Suprathermal Ion Spectrograph (SIS) on Solar Orbiter observed a series of 3He-rich solar energetic particle (SEP) events at a close radial distance from the Sun (0.42. AU). This period showed enhanced flux of 3He for a long time, a high abundance of heavy-ions, and multiple SEP injections with clear velocity dispersion in most cases. The spacecraft was magnetically connected close to a small active region (AR) that was likely the source of the series of 3He-rich events. The AR was close to a coronal hole that probably provided good access for the accelerated SEPs to the interplanetary space. During the separate SEP injections, we observe many jet-like eruptions and small-scale brightenings at the AR. I will present SIS observations that show interesting SEP spectrum characteristics and abundance variations. Interestingly, some of the injections exhibit very high 3He/4He and 3He/H ratios.