How to emit particle so that it rotates around its source?

Hi,
How would you set the settings of this particle, which spreads and rotates around the center of its source?

I tried to rotate the emitter, but all the previous particles follow the rotation, they don't stay where they were with their own forces.
I tried a force over lifetime but it does not rotate around the source.
I also tried to make an emitter mesh with Blender looking like the shape, and to use this "mesh" asset as the shape emitter, but the particles are emitted from everywhere.

Thanks

 

I think you first option of rotating the emitter would be doable. You just need to make sure the emitter is in WorldSpace or you will get the particles following the emitters rotation.

 

Great it works, thanks!