Mes Studio

tamte
just enable Add Hit Attributes on your POP Solver
then insert (or branch and merge) POP Replicate to your pop stream and set it's group to @hitnum>0

the rest is just a matter of customizing that collision emission on POP Replicate node so you can:
in Birth tab set Kill Original Particle
in Shape tab set uniform scale to 0 so that all points originate on parent particle position
in Attributes Tab you can add some variance to velocity so you get some dispersion after impact
etc