Can the Physics node exclude itself?

[zhangqingcheng]

I want to use some particles as a catapult to fly another group of particles. I use the Particle Physics node, but I can't rule out the interaction of the catapult itself. I am sure that I have tried all the settings I can try. The Particle Physics node is really not thorough. Does it exclude itself? 


As shown in the document, how to use green particles to fly red particles without affecting the green particles?